Unit 2

Trigonometry

Introduction

Lesson 2.3: Graphing Trigonometric Functions

Like other functions, trigonometric functions can be graphed. Such a visual representation serves to highlight some important characteristics of these functions and can help us interpret them.

In Lesson 2.3, you will

• sketch sine and cosine graphs,
• investigate characteristics of trigonometric graphs,
  
• solve trigonometric equations graphically, and
• compare graphical solutions of trigonometric equations to algebraic ones.
  

Coming into this Lesson, you should have

• an understanding of the six trigonometric ratios,
• the ability to graph functions by hand and with technology, and
• the ability to solve trigonometric equations algebraically.