Best Free Trigonometry Courses

Find the best online Free Trigonometry Courses for you. The courses are sorted based on popularity and user ratings. We do not allow paid placements in any of our rankings.

A mathematical way to think about biology

Why "is" biology log-normal? Why do some circuits oscillate? See biology from a physical sciences perspective.

Created by David Liao - Physicist (PhD, Princeton 2010)


Students: 25799, Price: Free

A mathematical way to think about biology comes to life in this lavishly illustrated video book. After completing these videos, students will be better prepared to collaborate in physical sciences-biology research. These lessons demonstrate a physical sciences perspective: training intuition by deriving equations from graphical illustrations.

"Excellent site for both basic and advanced lessons on applying mathematics to biology."
-Tweeted by the U.S. National Cancer Institute's Office of Physical Sciences Oncology

Ultimate guide to math word problems Intermediate Part One

Learn to tackle word problems in the easiest way possible!

Created by Chanda Academy - Education provider


Students: 12239, Price: Free

**May 2016 update: Course completely redesigned with a lot of new questions to further improve your learning**

Welcome to Ultimate guide to maths word problems - Intermediate Part One. This course is tailored towards Grade 9 students who're looking to get a leg up on their ability to tackle the dreaded word problems. If you have significant trouble with problem solving questions, then I suggest you enrol in Ultimate guide to maths word problems - Beginners Part One and Part Two before attempting this course as we'll be building on a lot of the things covered in those two.

This will always be a FREE course. Once you've completed it and would like to test your skills further, then have a go at the Ultimate guide to maths word problems - Intermediate Part Two course.

What are word problems?

We all learn basic concepts like fractions, decimals, algebra etc. at school. We know how to add fractions or simplify algebraic expressions, but what stumps us is having to apply our knowledge to "real life scenarios". These are word problems. I'm sure you've come across these during your schooling. For example, The authors of a book are going to share the royalties in proportion to the number of chapters they have each written. Charlie wrote 4 chapters, Brad wrote 3 and Nigel wrote 5. If they need to share $24,000, how much will they each get? Show full working.

This is a typical ratio-based word problem. Not sure how to do these? Then let me help :)

A lot of students find these types of practical questions quite challenging to answer as they have trouble linking their basic knowledge of ratios in this case to the real life scenario at hand.

How will this course help you?

Every topic that I cover in this course will come up in some form in years to come. I go through every single topic in a step by step form so it's really easy for you to follow along. Not convinced? Then I suggest you check out the previews before you decide to enroll, to make sure my teaching style is easy to follow, I am very confident that it is. To go a step further, Udemy's 30-day money back guarantee should also make you feel at ease.

What will this course have?

As I mentioned, this particular course is geared towards students in Grade 9. I will go through a number of problem solving / word problem questions, split into the different topics listed below. I go through each question in a systematical step by step manner making it super easy to follow along and adopt in your own workings.

What topics will the course cover?

The course will cover most topics that come up in these grades and are prone to have a lot of worded problems attached to them.

Indices, algebra, linear equations, geometry, trigonometry, ratios, finance, measurement, probability and quadratic algebra.

**BONUS** I've also added worksheets (with answers) for each topic to help you further test and implement your learning from the lectures.

**WARNING** I'm going to assume knowledge of how to perform the actual operations involved with these word problems. This course is only to show how to approach the word problems, NOT the operations behind them.

My next course will be Ultimate guide to maths word problems - Intermediate Part Two, where I will work through topics and questions, typically covered at the Grade 10 level i.e. one level harder than this course.

Why did I decide to create two intermediate courses?

If you're wondering this then that was because I saw that the level of difficulty jumps up heaps from Grade 9 to Grade 10 and some new concepts are introduced as well. So instead of piling everything into one course and confuse you, I decided to create two different ones so you could gradually go up in levels :).

Something missing in the course?

If you find I haven't covered a topic that you need at this level, let me know on the discussion board and I'll be happy to add it in :)

I can guarantee that you'll be miles ahead of the competition if you take this course seriously and best part about being able to do it all is that you can teach others as well. When you're willing to spend upwards of $50 an hour for a private tutor, it seems like a no brainer to at least give this a go, so that you have access to your very own private tutor any time you wish.

I'm good with messages and emails so if you have questions, make sure to get in touch with me. And furthermore, I want you guys to make full use of the discussion board because one of the best ways to learn is by sharing your knowledge with others. Thanks guys, really hope you enjoy.

Algebra Trigonometry – Polynomial and Rational Functions

Learn Polynomial and Rational Function and How to Work with Them

Created by Great IT Courses - Mathematics


Students: 10552, Price: Free

This course teaches you all the important underlying concepts in Polynomial and Rational functions in mathematics. The knowledge that you gain here can be further completed in our next courses towards a complete mastery of calculus.

This course covers the following topics: 

  • Quadratic Functions
  • Power Functions and Polynomial Functions
  • Graphs of Polynomial Functions
  • Dividing Polynomials
  • Zeros of Polynomial Functions
  • Rational Functions
  • Inverse and Radical Functions
  • Modeling Using Variation

This course has been taken from chapter 5 of the book, "Algebra Trigonometry" from openstax, ISBN-10: 1-947172-10-7. The book can be downloaded free of cost from their website. All chapters of the book have been planned to be produced as a video course by us. This course contains around 175 videos each averaging 15 minutes. Using this course, you'll learn polynomial and rational functions from scratch really well. 

Also, this course can be taken as part of a series that will take you all the way up to mastering calculus. All the courses in the series will be taken from the same book described above and other calculus books from openstax. You can read our "Mathematics" page on "GreatITCourses" website to make yourself more familiar with our road map. A Google search will take you to our website.  

Differentiation Made Easy: Learn to differentiate – Calculus

​Learn to take derivative of functions (trigonometric, exponential, logarithmic & ...) ,Test your knowledge on Quizzes

Created by Alireza Eshghi - Math Instructor


Students: 8405, Price: Free

Videos: Every video covers a topic of differentiation. For every topic I solve some examples from simple to hard. I believe that we learn better with more exercises.  

Quizzes: You can test your understanding and knowledge about a topic by taking a quiz ( All of them have complete solutions) . If you pass, congratulation. If not, you can review the videos again or look at the solutions of questions or ask me for help in the Q&A section.

Prep for GRE® Subject Math Exam – Module1:Basics

Solve subject math exam problems accurately and FAST!

Created by Gilad Pagi - GRE Subject Exam in Mathematics instructor


Students: 7798, Price: Free

This course is a prep course for the GRE Subject exam in Mathematics. If you wish to apply for a grad program in math, statistics and such, this exam is required.

This is the first module and includes all the pre-calculus material needed in order to excel in the exam. More importantly, the course teaches techniques for solving problems FAST (since in the exam you will have 2.5 min per question - very little time).

We will go over the following topics:

  • Solving problems using graphs.
  • Analytic Geometry.
  • Polynomials
  • Trigonometry
  • Important formulas to memorize
  • Most common derivative, anti-derivatives and Taylor Expansions.

The course is designed to review all that is necessary to get you up to speed and get you solving real exam problems. Knowledge covered in this module is assumed for the rest of the modules.

See the free intro lecture to get more details.

GRE is a registered trademark of Educational Testing Service (ETS) in the United States and other countries. This content is not endorsed or approved by ETS.

Introduction to Trigonometry (Algebra 2 Unit 14)

Learn basic trigonometry and trigonometric skills.

Created by Matthew Gromlich - Math Teacher


Students: 7028, Price: Free

This unit is the first in a High School Algebra 2 curriculum. It teaches basic trigonometric concepts so that they can be applied to algebra 2 concepts later on. It can be taken by traditional high school students as well as High School Equivalency (HSE) students who are learning about geometric topics for their equivalency exams (GED, TASC, and/or HiSET).Topics include:

(1) Introduction to Trigonometry

(2) Special Right Triangles in Trigonometry

(3) The Other Three Trig Functions

(4) Solving Trig Problems

(5) Angles of Elevation and Depression

Each section has a related video, a video quiz, and a section quiz. The video quiz is to be taken along with or shortly after watching the video. The section quiz is to be taken after. To supplement the course, you can use any textbook.

This course should take approximately five to ten hours to complete.

Maths – Basic angles, distances and coordinates

The fundamentals of Pythagoras, trigonometry, coordinates and whole circle bearings

Created by Saffron Grant - Civil Engineer


Students: 6558, Price: Free

The format of the course is narrated explanations and calculations. Its exactly the way that I've explained these things to hundreds of students and how I would explain them if you were sitting next to me right now!

The course covers the very basic aspects of:

  • Pythagoras
  • Angles (degrees, minutes and seconds)
  • Trigonometry
  • Coordinates
  • Whole circle bearings

The course assumes that you have zero knowledge of these topics so its perfect for you if you are:

  • completely new to the topics
  • need a refresher
  • are struggling with these or related topics

NCERT Solutions for Class 10 Maths Chapter 8 Trigonometry

Step by Step NCERT Solutions for CBSE class 10 Trigonometry

Created by Phani Raju - Teaching math from last 7 years


Students: 5518, Price: Free

NCERT Solutions for Class 10 Maths Chapter 8 Trigonometry is a self-paced course is designed to help CBSE Class 10 students to understand concepts and application through videos. You can view these Video lectures as many times as you want to clear the concepts.

Video Solutions has been prepared strictly as per latest syllabus issued by CBSE for the students associated with Class X.

Few of the features of the course:

  • Points to remember
  • Each Solution is explained with basic concepts
  • NCERT solutions for Class 10 maths Chapter 8 Trigonometry Textbook Exercises
  • Notes, Formulas, Definitions, Key points are included in the videos, while explaining each question.
  • Easy to understand and remember

Concepts covered:

  • Introduction to Trigonometry
  • Trigonometric Ratios
  • Trigonometric Ratios of Some Specific Angles
  • Trigonometric Ratios of Complementary Angles
  • Trigonometric Identities
  • Relation between trigonometric Ratios
  • Values of Trigonometric ratios in terms of the value of one of them.

Bonus: Selected RD Sharma Class 10 solutions of Trigonometry

Preparing for Pre-Calculus

Brush up on your skills before Pre-Calculus

Created by Brian McLogan - Current Active High School Math Teacher


Students: 4308, Price: Free

Are you ready for Pre-Calculus?  Are you sure you know what you got yourself into?  It doesn't matter if you struggled in Algebra 2 or thought it was a breeze.  Most students struggle with the the same concepts not because they cannot understand the material in pre-calculus but because they lack or forgot those previous skills taught in earlier courses. Repetition is apart of learning and in this course we will be making sure that you see the core topics covered in each section just enough to make it stick.

Integration Made Easy (Short Version) – Calculus

Calculus 2 -Learn different techniques of integration, U substitution, Part by Part, Partial fractions and much more...

Created by Alireza Eshghi - Math Instructor


Students: 3415, Price: Free

Videos: Every video covers a topic of Integration. For every topic I solve many many  examples from very simple to hard. I believe that we learn better with more and more exercises.

1. Integrations Formulas

2. U Substitution

3. Integration by Parts

4. Integration of Rational Functions by Partial Fractions

5. Integration of Trigonometric Functions

6. Trigonometric Substitutions

& much more...

Practice set for Maths | Quiz and Riddle series

A fun way of learning and testing various Math Principles

Created by LetsTute Make it Easy - Experts in Mathematics, Science, Accounting & Art and Craft


Students: 3172, Price: Free

Mathematics- a subject that studies quantity, structure, space and change. It involves a variety of calculations and requires a huge lot of practice. Many of us finds studying this subject a very boring task?

We thought how can it be made interesting for you?

So we have created this course named 'Fun with Math'. This course contains:

-- a series of Math quiz named 'Some Stupid Math Mistakes' which contains various topics from General Mathematics and a few topics from Algebra and Geometry.

-- a series of Math riddles where one needs to apply their math knowledge and logic to solve them.

Who can take this course?

The course can be taken by:

-- beginners or intermediate level Math students or

-- any parent or teacher who wants to make their teaching methods out of the ordinary. 

What are the benefits of this course?

-- One can test their basic Math knowledge and see the various math applications.

-- One will also learn how to avoid silly math mistakes and thereby avoid loosing math.

-- One will also learn to apply correct logic and smartly solve various math riddles.

Beginner to Expert in trigonometry part-1

Learn to solve competition level questions. Also learn tricks and tactics used in trigonometry to solve questions.

Created by Pankaj gupta - Passionate about maths


Students: 1658, Price: Free

You will learn following

  1. Importance of right angled triangle

  2. Angles and their relations

  3. Quadrants and angles in various quadrants

  4. Introduction of various trigonometric ratios

  5. Finding values of trigonometric ratios with basic angles

  6. Finding values of trigonometric ratios of angles in other quadrants

  7. proving three basic identities

  8. Questions solving tricks of three basic identities

    This will help you in solving calculus problems. This will help you to apply basic identities in trigonometry.


Learn Basics of Trigonometry and All about TRIGONOMETRIC Ratios with Approach to HEIGHT & DISTANCE Questions.

Created by CREATA CLASSES - CREATA CLASSES...... Adding Creativity to Learning


Students: 1174, Price: Free


This course EXPLAINS fundamentals of TRIGONOMETRY with help of Animation and other Visual Tools. The course is designed in scientific and CREATIVE way so that students can grasp the fundamental of Trigonometry.

Animation and other Visual tools are used, so that students can learn in Creative way, in totally different environment.

This course is for School Students and students preparing for competitive exams. This course will build your foundation very strong, as it also contains practical examples of Trigonometry in actual Life.

This course is also for Teachers, who want to teach their students in totally different and creative way.

After completing this course, you will be able to understand what actually a Trigonometry is and what is its practical significance. You will develop a strong and unbreakable foundation of Trigonometry that will help you in further progressing in Trigonometry.


- Better Understanding & Clarity through Animation & Visual Tools.

- Techniques to Approach Questions & fundamentals

- Experience of Industrial Professionals

- Question series with Assignments



Basics Before Start of Trigonometry


Introduction to Trigonometric Ratios (Sin/ Cos/ Tan)

Trigonometric Ratio of 45 Degree

Trigonometric Ratio of 30 & 60 Degree

Trigonometric Ratio of 0 & 90 Degree

Trigonometric Ratio Table & Related Observations

Trigonometric Function


Summary & How to Approach Questions.

Questions on Trigonometric Ratio’s.

Questions on Height & Distance.


SAT and ACT Math – Basic Geometry concepts

Helpful for the SAT & the ACT exams

Created by Pooja JP - Math Tutor


Students: 929, Price: Free


I'm Pooja. I'm a Software Engineer and a Math tutor.

I have created this course to provide helpful content or students preparing for competitive exams - SAT and ACT

You will find key concepts around which most of the geometry questions are asked in these exams.

Join the course and learn all the basics you need to know.

See you there :-)

Learn Python NumPy for Machine Learning

Why Learn NumPy for Machine Learning?

Created by Saima Aziz - Instructor


Students: 745, Price: Free

Welcome to Learn NumPy for Machine Learning course. My name is Saima Aziz and I will be the instructor for this course.

In this course we will learn how to create Numpy arrays, learn some built-in functions, access values, broadcasting and manipulating arrays etc.

Python is a general purpose and high level programming language. You can use Python for developing desktop GUI applications, websites and web applications. We will learn Numpy from scratch, which is one of the most popular Python programming language library.

Numpy stands for ‘Numerical Python’. It is an open-source Python library used to perform various mathematical and scientific tasks. It contains multi-dimensional arrays and matrices, along with many high-level mathematical functions that operate on these arrays and matrices. Moreover, NumPy forms the foundation of Machine Learning.

NumPy helps to calculate large quantities and common descriptive statistics. It is very useful for handling linear algebra, fourier transforms, and random numbers. It's high speed coupled with easy to use functions make it a favorite among Data Science and Machine Learning practitioners. Many of its functions are very useful for performing any mathematical or scientific calculation.

I encourage you to take the course from beginning to end to get the full learning experience. Some topics may be very easy for you and others will be challenging, but each topic should offer something of value.

Hope you will enjoy the course!

IB maths AA Complex Number (HL)

Complete course on the topic of Complex Number designed for IB Math AA HL by an IB examiner

Created by Kidd Cheung - Math, teaching and exam enthusiast


Students: 700, Price: Free

A free course on the topic of Complex Number, designed according to the latest syllabus of IB Math AA HL, under topic 1: Algebra

Designed to the need of an HL student. It also included exam question demonstrations to show IB exam skills.

This course is meant to be quick but covers all the essentials of the topic Complex Number. 

Also check out my YouTube channel KIDD WSTWTY Math Channel and my Patreon Membership @ KiddCheung

Trigonometry| Trigonometry Ratio| Trigonometry Identities |

Trigonometry for academics

Created by Kuldeep Yadav - Director at UrbanGuru India


Students: 444, Price: Free

Trigonometry is an important branch of Mathematics. Generally many questions do come from this topic in competition exams. The course is useful for both beginners as well as for advance level. It covers following areas in details-

· Introduction and Angle

· System of measurement of an angle

· Relation between three systems of angle measurement

· Trigonometric Ratios

· Fundamental Trigonometrical Identities

· Trigonometric Ratios of specific angles

· Trigonometric Ratios of Complementry Angles

· Application of Trigonometry (Height and distance)

· Signs of Trigonometric Ratios

· Trigonometric Ratios of Allied Angles

· Periodic functions

· Even and odd functions

· Formulae for Trigonometric Ratios of Compound angles

· Transformation Formulae

· Trig Ratios of multiple and submultiple angles

· Conditional Trigonometric Identities

· Graphs of Trig Functions

· Solution of triangles-Laws of sine, cosine and tangent Projection formula

· Half angle Formulae

· Circles connected with a triangle

· Trigonometric Equations

· Inverse Trigonometric Functions and its formulae

· Expressing one circular function into another and standard formulae

Each of the above topics has a great explanation of concepts followed by solved excellent and selected examples. Several quiz and problem sheets have been given at appropriate places for self evaluation of students .

Hope the course will develop better understanding and boost the self confidence of the students.


  • You should be comfortable with the Fundamentals of Math.

  • You should be comfortable with basic Algebra, like equation solving.

  • A little Geometry is helpful, but not absolutely necessary.

  • We'll start the course by talking about angles, so if you know some algebra and geometry basics, you'll be well-prepared for the course.

Master Your Math – Properties of Triangles




Students: 307, Price: Free



By Mr.Mohammad Afzaluddin

About the Course: - This Course intends to cater the needs of the Grade 11 students who have prior fundamental overview on the types & shapes of triangles, based on its sides & angles and also are aware of the basic Triangle Formulae & theorems. This Course shall enhance their knowledge in the topics such as Sides & Angles of Triangle, Area of Triangle, SINE Rule, Projection Formulae, COSINE Rule, Half-Angle Formulae, TANGENT Rule & formulae using R, r, r1, r2, r3. By the end of this course it is expected that students will be able to master a minor part of the Plane Trigonometry Chapter.

About the Lecturer: - “MOHAMMAD AFZALUDDIN is a graduate from Osmania University (with First Class Honours), specialising in Pure Mathematics, Applied Mathematics and Statistics. Coming from a family of teachers, he is a born teacher with over four decades of teaching experience, and emulates a lot of the teaching that he gained from his father - an illustrious teacher in his own right.

His teaching and tutoring experience extends from Senior High School level through to Postgraduate students within the Engineering and Mathematics realms; as well as those seeking to bolster their understanding and performance for competitive Entrance exams at national and state levels.

The stand-out feature of Mr.Afzaluddin's teaching is that he introduces every topic from its very inception, and systematically addresses each level progressing therefrom.

We hope that students will derive great benefit from his vast knowledge and teaching style, conveyed succinctly and engagingly in these lectures."

Origins of the Sine Wave

A comprehensive lecture on understanding sinusoids and deriving the wave equation for audio

Created by Akash Murthy - Audio Programmer


Students: 266, Price: Free

Sinusoids are among the fundamental building blocks of any analog or digital audio signal. A single sine wave is said to be the purest tone you can audibly achieve, and because of this, they are used extensively as control signals for testing equipment and applications and plugins. But why? Why are sinusoids fundamental? And how are they formed? What even are they in the natural world? We’ll address all of this and more in the course.

The course starts from humbling beginnings where it looks at the geometry of right angled triangles, and explore a beautiful relation between static shapes and periodic functions. It takes a look at unit circles and deconstruct them to find that at the heart of all circles are periodic functions which we call sinusoids. It looks at all the attributes and properties of sinusoids and what real world effects they have when these properties are changed, and in that process derive an equation for a generic sine wave. And finally the course explores why they are fundamental in nature by observing how sinusoidal behavior is baked into every day objects that we might take for granted.

You don’t need to have any prior knowledge for this course. Any mathematics that appears in the course is accompanied by many illustrations and animations to visually paint a picture of these concepts. If you are getting started with digital signal processing, audio programming or if you’re just enthusiastic about understanding audio at a deeper level, this is a course for you.