3.3 Unit Circle
Find the exact circular function value for each of the following:
8. cos
5π
3
16. sec
5π
4
12. cot
5π
6
 5π 

 6 
18. sin  −
Find a calculator approximation for each circular function value.
Your calculator must be in RADIAN mode.
30. csc1.3875
32. sec( −8.3429)
26. cos( −5.2825)
Evaluate the six trig functions for θ.
 π
 2 
58. cot s = .2994
Find the value of s in the interval 0,
56. cos s = .7826
60. csc s = 1.0219
Find the exact value of s in the given interval. No Calculator!
π , π  ; tan s = − 3
 2 
3
 3π , 2π  ;cos s = 2
 2

2
64.
π , 3π  ;sin s = − 1
 2 
2