Warm-up: 1) Given sin = ½ and and csc  > 0 can you find the angle measure  definitively? Given cosx = − 3 2 . And sinx < 0 find the other five trigonometric functions of x. 2) CW: Trig Function Quiz Review.

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

2 3 3 − 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 − 2 2 3 2 − 2 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

sinx = − 3 2 cscx= − 2 3 3 cosx = − 1 2 secx= −2 tanx = 3 cotx= 3 3 sinx = − 5 13 cscx= − 13 5 cosx = 12 13 secx= 13 12 tanx = − 5 12 cotx= − 12 5

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

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

Review: Find all 6 trig functions of an angle

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

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