Algebra-2

To find the value of cos θ, we need to determine the ratio of the adjacent side to the radius of the circle.

Given the point on the terminal side of the angle θ, we can determine the values of the adjacent side and the radius.

The adjacent side is the x-coordinate, which is -7.

The radius of the circle is the distance from the origin to the given point. We can find the radius using the Pythagorean theorem:

radius =

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