Algebra-2

Question Analysis
This problem tests the ability to use the cosine function to find the length of the adjacent side in a right triangle.

Key Concept Explanation
The cosine of an angle in a right triangle is the ratio of the length of the adjacent side to the length of the hypotenuse. Mathematically, this is expressed as: .

Step-by-step Solution
1. Identify the given values:

Click "Show Answer" to reveal the answer and analysis