Sine, cosine and tangent trigonometric functions

6 videos
5 skills
In this tutorial, you will learn all the trigonometry that you are likely to remember in ten years (assuming you are a lazy non-curious, non-lifelong learner). But even in that non-ideal world where you forgot everything else, you'll be able to do more than you might expect with the concentrated knowledge you are about to get.

The basics of trigonometry

VIDEO 9:17 minutes
What is trigonometry? Get the answer here.

Example: Using soh cah toa

VIDEO 4:05 minutes
Worked example evaluating sine and cosine using soh cah toa definition.

Trigonometry 0.5

PRACTICE PROBLEMS

Basic trigonometry II

VIDEO 12:11 minutes
A few more examples using SOH CAH TOA

Trigonometry 1

PRACTICE PROBLEMS

Trigonometry 1.5

PRACTICE PROBLEMS

Example: Trig to solve the sides and angles of a right triangle

VIDEO 7:04 minutes
Worked example using trigonometry to solve for the lengths of the sides of a right triangle given one of the non-right angles.

Trigonometry 2

PRACTICE PROBLEMS

Applying right triangles

PRACTICE PROBLEMS