# Parametrizations of the Unit Circle Exercises

### Example 1

Give parametric equations and bounds for the parameter that describe the unit circle as shown. In each case the unit circle should be traced only once. Check the answers by putting them in a calculator and seeing if we find the right picture.

### Example 2

Give parametric equations and bounds for the parameter that describe the unit circle as shown. The unit circle should be traced only once. Check the answers by putting them in a calculator and seeing if we find the right picture.

### Example 3

Give parametric equations and bounds for the parameter that describes the unit circle as shown. The unit circle should be traced only once. Check the answers by putting them in a calculator and seeing if we find the right picture.