Question

There is a paint chip on the edge of a gear for a music box. It rotates to (-7, 3) during one song when represented graphically. What is the cosine value of this function?

Answer 1

The answer is −7√58/58

Explanation:

Answer 2

The solution would be like this for this specific problem:

Cosθ = adjacent side/hypotenuse
c^2 = a^2 + b^2 c^2 = 3^2 + 7^2 c = sqrt(3^2 + 7^2) = ?

c^2 = a^2 + b^2 c^2 = 3^2 + 7^2 c = sqrt(3^2 + 7^2) = ?

cosθ = adjacent side/hypotenuse = − 7/√58 = −7√58/58