Question

value of the function.
$cos 60^circ$
(there is a unit circle diagram with a point in the first quadrant, a vertical line to the x - axis, and the angle between the radius and the x - axis is $60^circ$)
answer attempt 1 out of 2
$cos 60^circ =$ input box submit answer

Explanation:

Step1: Recall cosine definition

In unit circle, $\cos\theta$ is x - coordinate of point on circle at angle $\theta$.

Step2: Use special angle value

For $\theta = 60^\circ$, $\cos60^\circ=\frac{1}{2}$.

Answer:

$\frac{1}{2}$