1. Warm-up: 1)
Given sin = ½ and and csc  > 0 can you find the angle measure  definitively?
Given cosx = − And sinx < 0 find the other five trigonometric functions of x. 2)
CW: Trig Function Quiz Review.

2. Objectives Evaluate trigonometric functions of any angle
Use reference angles to evaluate trigonometric functions.

4.
− 2 1
13/5
5/3
-17/8
-25/7
29/21 2 1 4 On
y-axis 2 3
1/2
2 2
12/13
-4/5
-15/17
-24/25
-20/29 −
3 2 − 1
5/13
3/5
-8/17
-7/25
21/29
2 2 3 −1
und
5/12
-3/4
8/15
7/24
-21/20 2
und
13/12
-5/4
-17/15
-25/24
-29/20
− 2
3 3 −1
12/5
-4/3
15/8
24/7
-20/21

5. sinx = − cscx= −
cosx = − secx= −2
tanx = cotx=
sinx = − cscx= − 13 5
cosx = secx=
tanx = − cotx= − 12 5

6. sinx = cscx= 5 3
cosx = − secx= − 5 4
tanx = − cotx= − 4 3
sinx = − cscx= − 17 8
cosx = − secx= − 17 15
tanx = cotx= 15 8

7. sinx = − cscx= − 25 7
cosx = − secx= − 25 24
tanx = cotx= 24 7

8. Review: Find all 6 trig functions of an angle

9. Summary:
What do we need to find all 6 trig functions of an angle?

10. Sneedlegrit: Find all 6 trig functions of an angle
CW: Trig Function Quiz Review.