Complementary angles are those that add up to 90. Therefore, the complementary angle of 90 is 0.
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Complementary angles are found by subtracting a random angle from 90 degrees for complementary always and 180 for supplementary always
Complementary angle = 90 - 71 = 19 degrees
A pair of angles are complementary if their sum adds up to 90 degrees. Therefore, in this case, the angle complementary to 23.5 degrees is 90 - 23.5 = 66.5 degrees.
90 degrees
Complementary angles total 90o so 90 - 80 = 10; the complementary angle is 10o.