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.