Learning Resources

Outcomes

In this lesson you will

• Explore trigonometry as a circular function.
• See that the coordinates of any point on a circle can be expressed as trigonometric functions of the central angle.

By the end of this section you should be able to:

• Demonstrate an understanding of the relationship between angle rotation and the coordinates of a rotating point.
• Solve problems involving the equations and characteristics of circles and ellipses.

Introduction

In this section you will extend your understanding of trigonometry as a circular function. You will explore angle measures greater than 90°, express angles as rotations, and use radian measure.

Prerequisites

To be successful in this lesson, it would be helpful to know the following:

• How to use a calculator to find sine and cosine of a given angle.
• The concept and use of the unit circle.