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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 the Law of Cosines, solving SAS and SSS triangles, and applying formulas to oblique triangle problems.

Trigonometry Law of Cosines Study Guide: SAS & SSS Cases

The Law of Cosines: Solving Oblique Triangles

Law of Cosines

Law of Sines

The Law of Cosines: Solving Oblique Triangles

Study Guide - Learn with Videos

Law of Cosines

Law of Sines