Question

NEED HELP ON THREE SIMPLE TRIG PROBLEMS, I WILL FAN AND GIVE MEDAL

Answer 1

@Mertsj

Answer 2

cos pi/3 = 1/2
cos 5pi/3 = 1/2

Answer 3

cos - pi/3 = 1/2

Answer 4

cos 7pi/3=1/2
cos 11pi/3=1/2

Answer 5

study the unit circle, the coordinates are (x,y) = (cos(angle), sin(angle))

Answer 6

But 11pi/3 is outside the given domain so scratch that one.

Answer 7

ok, which problem are we studying?

Answer 8

here is number 1, since it tells you to just look at the graph

Answer 9

wait