complementary angles
two angles whose measures have a sum of 90 degrees
Complementary angles are two angles whose measures add up to 90 degrees. In other words, if angle A is one of the angles, and angle B is the other angle, then A + B = 90 degrees.
For example, if angle A measures 30 degrees, then angle B measures 60 degrees because 30 + 60 = 90. In this case, angle A and angle B are complementary angles.
Complementary angles are found in many types of problems, such as geometry, physics, and engineering. They are commonly used in trigonometry, where they can help to simplify complex calculations involving angles.
Two angles are complementary if and only if the sum of their measures is 90 degrees. Complementary angles are important in many areas of mathematics and can be used in many different types of problems. If you know that two angles are complementary, you can use this fact to solve for the value of one angle, given the value of the other.
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