Geometry

Question Analysis

This question involves the concept of complementary angles.

 

Key Concept Explanation

Complementary angles are two angles whose measures add up to 90 degrees. When two angles are complementary, if the measure of one angle is known, we can find the measure of the other by subtracting the known angle's measure from 90 degrees.

 

Step - by - Step Solution

1. Recall the relationship for complementary angles:

Let  and  be the unknown angle. Since  and  are complementary, we have the equation .

 

2. Solve for :

Rearrange the equation to .

Substitute  into the equation: .

 

Option Analysis

A.73 degrees: This is the correct answer as

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