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Angles, identities, and trig functions giving you trouble? Trigonometry is explained step-by-step so solving problems feels more approachable.

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Patrick Ford

Callie Rethman

Nick Kaneko

0. Review of College Algebra

1. Measuring Angles

2. Trigonometric Functions on Right Triangles

3. Unit Circle

4. Graphing Trigonometric Functions

5. Inverse Trigonometric Functions and Basic Trigonometric Equations

6. Trigonometric Identities and More Equations

7. Non-Right Triangles

8. Vectors

9. Polar Equations

10. Parametric Equations

11. Graphing Complex Numbers

Default TOC

This trigonometry study guide covers the six trigonometric functions, right triangle relationships, and the Pythagorean Theorem essentials.

Trigonometry Study Guide: Trigonometric Functions & Basics

Trigonometric Functions and the Pythagorean Theorem

Trigonometric Functions on Right Triangles

Pythagorean Theorem & Basics of Triangles

Trigonometric Functions and the Pythagorean Theorem

Study Guide - Learn with Videos

Trigonometric Functions on Right Triangles

Pythagorean Theorem & Basics of Triangles