Question

A ray on the positive x-axis is rotated -450°. What is the cosine of the angle formed by this rotation?(1 point)
Responses

-1
-1

2√2
the fraction with numerator square root of 2 and denominator 2

1
1

0

Answer 1

Reduce the angle mod 360: -450° ≡ -90° ≡ 270°. Cos(270°) = 0. So the correct choice is 0.