Question

I NEED HELP THANK YOU!!

Answer 1

D

Explanation:

cos 330 = cos (360-330)

= cos 30

= √3 /2

Answer 2

rt3/2

Explanation:

first off cosine is the x coordinate

now if you do't want to use a calculator, you can use use the unit circle.

360 - 330 = 30 (360 degrees is a whole circle)

a 30 60 90 triangle is made, then use the law for 30 60 90 triangles:

if the shortest leg is x, the other leg is x*rt3 and the hypotenuse is 2x.