Question

What is the value of cosine theta in the diagram below?

A unit circle is shown. A radius with length of 1 forms angle theta in the first quadrant. The radius goes to point (0.6, 0.8) on the unit circle.
Three-fifths
Three-fourths
Four-fifths
Four-thirds

Answer 1

A. 3/5

Explanation:

cause i know

Answer 2

A: Three-fifths

Explanation:

I have attached an image to depict this question.

We can see that the point at which the radius goes on the unit circle is a coordinate (x, y)

We are told this coordinate is (0.6, 0.8)

Now, in these type of unit circle diagrams;

x = cos θ and y = sin θ.

Thus;

cos θ = 0.6

cos θ = 6/10

Simplifying gives;

cos θ = 3/5