## complementary angles

### Complementary angles are a pair of angles that add up to 90 degrees

Complementary angles are a pair of angles that add up to 90 degrees. In other words, when two angles are complementary, the sum of their measures is equal to a right angle.

For example, suppose we have an angle A measuring 45 degrees. The complementary angle to A would be another angle B, such that the sum of their measures is 90 degrees. Angle B would then measure 45 degrees as well, making A and B complementary angles.

Complementary angles can occur in various contexts, such as in geometry, trigonometry, and everyday life. In geometry, right angles (90 degrees) often play a significant role, and their complement angles are essential in solving problems involving angles and sides of shapes.

To find the complement of an angle, you can subtract its measure from 90 degrees. For instance, if you have an angle measuring 32 degrees, subtract it from 90 to find its complement:

90 degrees – 32 degrees = 58 degrees. So the complement of an angle measuring 32 degrees is 58 degrees.

Complementary angles have several important properties:

1. The sum of the measures of complementary angles is always 90 degrees.

2. If two angles are complementary, either one can be acute (less than 90 degrees) and the other will be obtuse (greater than 90 degrees).

3. Understanding complementary angles helps solve equations involving angles, where the sum of two angles is given.

Overall, complementary angles are an important concept in mathematics and have various applications in geometry, trigonometry, and problem-solving.

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