Practice!

Sample Problem

Select the correct point (x, y) on the unit circle that corresponds to t=5π/3.

Solution

Check and refer back to the unit circle for the (x, y) values for the common angles.

Description: http://www.spsu.edu/math/edwards/1113/unit2.gif

Based on the unit circle, we know that the (x, y) value corresponding to t=5π/3 is (1/2, -√3/2).