Question

what is the value of the following trig. function? (unit circle) * cos 60° 1/2 0 √3/2 √2/2

Explanation:

Step1: Recall unit - circle values

On the unit circle, for an angle $\theta = 60^{\circ}$, the cosine value is based on the x - coordinate of the point on the unit circle corresponding to that angle.
The coordinates of the point on the unit circle for $\theta = 60^{\circ}$ are $(\frac{1}{2},\frac{\sqrt{3}}{2})$, where $\cos\theta$ is the x - coordinate.

Answer:

A. $\frac{1}{2}$