### Home > PC3 > Chapter 2 > Lesson 2.2.2 > Problem 2-64

2-64.

Evaluate each of the following expressions by using special right triangles and the unit circle (give exact values).

1. Draw a unit circle and locate the angle.

2. Draw a right triangle with the base is the

*x*-axis.3. Label the side lengths.

4. Choose the

*y*-value for the sine!