If angle A measures 42 degrees and is complementary to angle B, what is the measure of angle B?

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To determine the measure of angle B, you need to understand the concept of complementary angles. Complementary angles are two angles whose measures add up to 90 degrees. In this case, angle A is 42 degrees, and we are trying to find the measure of angle B.

You can use the following equation to find angle B:

Angle A + Angle B = 90 degrees

Substituting the known value of angle A into the equation:

42 degrees + Angle B = 90 degrees

To find angle B, simply subtract the measure of angle A from 90 degrees:

Angle B = 90 degrees – 42 degrees

Angle B = 48 degrees

Therefore, the measure of angle B is 48 degrees.

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