Question

For an angle Θ with the point (12, -5) on its terminating side, what is the value of cosine?

Answer 1

`cos(theta) = 12/13`

Explanation:

The length of the hypotenuse from the origin to `(12,-5)` can be calculated using the Pythagorean Theorem to be `13`

`cos =("x")/("hypotenuse")= 12/13`