Complementary Angles
Two angles whose sum is 90 degrees
Complementary angles are two angles whose measures add up to 90 degrees. For instance, if we have an angle with a measure of 45 degrees, the complementary angle will measure 90 – 45 = 45 degrees. This is because the sum of the two angles is equal to 90 degrees.
Complementary angles are commonly found in geometry and trigonometry, especially when working with right triangles. One of the angles will be the angle between the hypotenuse and one of the legs, and the other will be the angle between the hypotenuse and the other leg. The two angles are complementary because together they form a right angle.
Complementary angles can also be used to find missing angles in geometric figures. If we know that two angles are complementary and we know the measure of one of them, we can use subtraction to find the measure of the other angle.
Finally, it is important to note that complementary angles are not limited to right triangles. Any two angles that add up to 90 degrees are considered complementary angles.
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