Homework Sourseuse the evenodd properties of the trigonometric function to
use the even-odd properties of the trigonometric function to find the exact value of the given expression s
c- 3)cos (-a 6 Solution
14) sin (-45) = - sqrt2/2
15) cot (-45) = -1
16) csc(-60) =-2 sqrt3/3
17) tan (-pi/3) = - sqrt3
18) cos(-pi/3) = 1/2
19) tan (-pi) =0
20) sec(-pi/6) =2 sqrt3/3 answers
