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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

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This trigonometry study guide covers angle relationships, vertical angles, and similar triangles, with examples and explanations for easy learning.

Angle Relationships and Similar Triangles: Foundations for Trigonometry

Study Guide - Learn with Videos

Pythagorean Theorem & Basics of Triangles

Angles in Standard Position

Complementary and Supplementary Angles