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. If the measure of one angle in a complementary pair is known, we can find the measure of the other angle 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 ∠K and ∠L are complementary, we have the equation .

 

2. Solve for :

Rearrange the equation to .

Substitute into the equation: .

 

Option Analysis

A.127°: If , then

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