Algebra-2

Question Analysis
This problem evaluates the understanding of the cosine function in a right triangle.

Key Concept Explanation
The cosine of an angle in a right triangle is defined as the ratio of the length of the adjacent side to the hypotenuse.

Step-by-step Solution
1. Identify the given values: Adjacent side = 12 units, Hypotenuse = 20 units.
2. Use the cosine function:

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