Question

What is the y-value of cos(x) when x = -360°?
A. -1
B. 0
C. one-half
D. 1

Answer 1

\[\huge \cos(- \theta) = \cos(\theta)\]

Answer 2

So,

\[\cos(-360) = \cos(360)\]

Answer 3

and:

\[\cos(360) = \cos(0) = 1\]

Answer 4

so the answer is 1

Answer 5

alright thanks

Answer 6

Yes you are right..