Question

Question #384c9

Answer 1

Find values of trig functions.

Explanation:

x = - 660
Trig table of special arcs , unit circle -->
`sin (-660) = sin (60 - 720) = sin (60 - (2)(360)) =`
`= sin 60 = sqrt3/2`
`cos (-660) = cos (60 - 720) = cos 60 = 1/2`
`tan (-660) = (sin)/(cos) = (sqrt3/2)(2/1) = sqrt3`
`cot (-660) = cos/(sin) = (1/2)(2/sqrt3) = 1/sqrt3 = sqrt3/3`
`sec (-660) = 1/(cos) = 2`
`csc (-660) = 1/(sin) = 2/sqrt3 = (2sqrt3)/3`