Answer
Complementary angles are two angles, when added together, equal 90°.
To find an angle's complement, you subtract the measure of the known angle from 90°.
Work Step by Step
Complementary angles are two angles, when added together, equal 90°.
To find an angle's complement, you subtract the measure of the known angle from 90°. In other words, the measure of an angle's complement can be found using the following formula, with $C$ as the measure of the complementary angle and $x$ is the measure of the known angle:
$$C = 90° - x$$
