# Chapter 8: Right Triangle Trigonometry

Difficulty Level:

**At Grade**Created by: CK-12

Chapter 8 takes a look at right triangles. A right triangle is a triangle with exactly one right angle. In this chapter, we will prove the Pythagorean Theorem and its converse. Then, we will introduce trigonometry ratios. Finally, there is an extension about the Law of Sines and the Law of Cosines.

Chapter Outline

- 8.1.
## The Pythagorean Theorem

- 8.2.
## Converse of the Pythagorean Theorem

- 8.3.
## Using Similar Right Triangles

- 8.4.
## Special Right Triangles

- 8.5.
## Tangent, Sine and Cosine

- 8.6.
## Inverse Trigonometric Ratios

- 8.7.
## Chapter 8 Review

- 8.8.
## Study Guide

### Chapter Summary

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This chapter proves the Pythagorean Theorem and its converse. It also introduces trigonometry ratios and covers an extension about the Law of Sines and the Law of Cosines.

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Date Created:

Feb 22, 2012
Last Modified:

Jan 14, 2016
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