1. Warm-up:
Find the exact values of the other 5 trigonometric functions given sin= with 0 <  < 90
CW: Right Triangle Trig

2. 4) 𝑠𝑖𝑛= 2 2 , 𝑐𝑜𝑠= 2 2 , 𝑡𝑎𝑛=1, 𝑐𝑠𝑐= 2 , 𝑠𝑒𝑐= 2 , 𝑐𝑜𝑡=1
HW Answers: pg.387 (2 – 16 even, 33 – 36, 37 – 39, 47 – 52, 59 – 66)
2) 𝑠𝑖𝑛= 5 13 , 𝑐𝑜𝑠= , 𝑡𝑎𝑛= 5 12 , 𝑐𝑠𝑐= 13 5 , 𝑠𝑒𝑐= , 𝑐𝑜𝑡= 12 5
4) 𝑠𝑖𝑛= , 𝑐𝑜𝑠= , 𝑡𝑎𝑛=1, 𝑐𝑠𝑐= 2 , 𝑠𝑒𝑐= 2 , 𝑐𝑜𝑡=1
6) 𝑠𝑖𝑛= 8 15 , 𝑐𝑜𝑠= , 𝑡𝑎𝑛= , 𝑐𝑠𝑐= 15 8 , 𝑠𝑒𝑐= , 𝑐𝑜𝑡=
8) 𝑠𝑖𝑛= , 𝑐𝑜𝑠= , 𝑡𝑎𝑛= 1 2 , 𝑐𝑠𝑐= 5 , 𝑠𝑒𝑐= , 𝑐𝑜𝑡=2
10) 𝑠𝑖𝑛= , 𝑐𝑜𝑠= , 𝑡𝑎𝑛= 1 5 , 𝑐𝑠𝑐= 26 , 𝑠𝑒𝑐=
12) 𝑠𝑖𝑛= , 𝑡𝑎𝑛= , 𝑐𝑠𝑐= , 𝑠𝑒𝑐= 7 5 , 𝑐𝑜𝑡=
14) 𝑠𝑖𝑛= 4 17 , 𝑐𝑜𝑠= , 𝑡𝑎𝑛= , 𝑠𝑒𝑐= , 𝑐𝑜𝑡=
16) 𝑐𝑜𝑠= , 𝑡𝑎𝑛= , 𝑐𝑠𝑐= 8 3 , 𝑠𝑒𝑐= , 𝑐𝑜𝑡=
33) 𝑎 𝑏
34) 𝑎 𝑏
35) 𝑎. 1 𝑏
36) a 𝑏. 2
37) a b ) a b ) a b

3. a. 30°= 𝜋 𝑏. 30°= 𝜋 6
a. 45°= 𝜋 𝑏. 45°= 𝜋 4
a. 60°= 𝜋 𝑏. 45°= 𝜋 4
a. 60°= 𝜋 𝑏. 60°= 𝜋 3
59)
60) 20 2
23.3
68.7
6.1
96.6
17.25 ft
a. b. 6/3 = h/135 c.270ft h 6
132 3

4. Sneedlegrit:
Let  be an acute angle such that tan = 4 Find the other six trigonometric functions.
CW: Right Triangle Trig