# Chapter 14: Trigonometric Functions and Identities

Created by: CK-12

## Introduction

In this chapter, we will extend our knowledge of trigonometry to graphing sine, cosine, and tangent functions and using trigonometric identities and formulas to simplify expressions, prove trigonometric statements, and solve equations.

## Chapter Outline

- 14.1. Graphing Sine and Cosine
- 14.2. Translating Sine and Cosine Functions
- 14.3. Putting it all Together
- 14.4. Changes in the Period of a Sine and Cosine Function
- 14.5. Graphing Tangent
- 14.6. Introduction to Trig Identities
- 14.7. Using Trig Identities to Find Exact Trig Values
- 14.8. Simplifying Trigonometric Expressions
- 14.9. Verifying a Trigonometric Identity
- 14.10. Solving Trigonometric Equations Using Algebra
- 14.11. Solving Trigonometric Equations Using Quadratic Techniques
- 14.12. Finding Exact Trig Values using Sum and Difference Formulas
- 14.13. Simplifying Trig Expressions using Sum and Difference Formulas
- 14.14. Solving Trig Equations using Sum and Difference Formulas
- 14.15. Finding Exact Trig Values using Double and Half Angle Formulas
- 14.16. Simplifying Trig Expressions using Double and Half Angle Formulas
- 14.17. Solving Trig Equations using Double and Half Angle Formulas

### Chapter Summary

## Summary

In this chapter, you will learn how to graph sine, cosine, and tangent as we well as what a trigonometric identity is. You will use these identities and formulas to simplify expressions, prove trigonometric statements, and solve equations.

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Trigonometric Functions and Identities

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Trigonometric Functions and Identities

http://www.ck12.org/book/CK-12-Algebra-II-with-Trigonometry-Concepts/section/14.0/
## Description

This chapter covers graphing the trig functions and using trig identities to simplify expressions, prove trigonometric statements, and solve equations.

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## Date Created:

Oct 08, 2013## Last Modified:

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