Module 6.2
Unit Circle and Exact Values of Trig Functions
Unit Circle
The unit circle is a circle
with radius = 1 that gives
exact values for angle
measures in both degrees
and radians at 0˚(0),
π
π
π
30˚( ), 45˚( ), 60˚( ),
6
π
90˚( )
2
4
3
and
in each
quadrant. We will use our
trig functions to find the
exact values of general
angles
Unit Circle Value Chart
 Cos:
 Sin:
 Each
angle
4
0
3
1
2
2
2
2
1
3
0
4
numerator represents the next general
Dedication!!!!