Geometry

Question Analysis

The main focus of this question is to utilize the cosine function in a right - triangle to solve for the unknown side . Given an angle of and the length of the adjacent side (), we need to find the hypotenuse ().

Key Concept Explanation

In a right - triangle, the cosine of an angle is defined as . Here, , the adjacent side is , and the hypotenuse is .

Step - by - Step Solution

1. Given the equation .

Cross - multiply to get .

Then, isolate

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