1. A circle with center at (0, 0) and radius 1 is called a unit circle.
The equation of this circle would be
(0,1)
(-1,0)
(1,0)
(0,-1)
So points on this circle must satisfy this equation.

3. Label the 4 principal angles that lie on the x and y axes of the unit circle in degrees.
Label the special angles around the unit circle in degrees.
Label the 4 principal angles that lie on the x and y axes in radians.
Label each angle that is a multiple of 60˚ in radians
Label each angle that is a multiple of 45 ˚ in radians
Label the remaining special angles in radians.
Write the coordinates (x, y) for the points on the unit circle that lie on the x and y axes.
Write the coordinates (x, y) for all of the angles whose reference angles are 45˚ (π/4 radians).
Write the coordinates (x, y) for all of the angles whose reference angles are 30˚ (π/6 radians).
Write the coordinates (x, y) for all of the angles whose reference angles are 60˚ (π/3 radians).

4. Complete. Angle (rad) sin cos tan π/2 π 3π/2 Angle (rad) sin cos tan
π/2 π
3π/2
Angle (rad)
sin
cos
tan
π/6
5π/6
7π/6
11π/6
Angle (rad)
sin
cos
tan
π/4
3π/4
5π/4
7π/4
Angle (rad)
sin
cos
tan
π/3
2π/3
4π/3
5π/3