The angle or arc that when added to a given angle or arc equals a right angle in measure
That is, for any angle x less than 90º, the complement of xº = (90 - x)º. For example, the complement of 15º is (90 - 15 =) 75º.
Here's a related answer for free: the supplement of an angle x is 180º - x.
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The complement of an acute angle A is the angle 90° - A. The complement of 13° is 77°.
The angle is 50 and its compliment is 40.
The complement of an angle C is (90 - C) So the complement of an angle of 17.7° is (90 - 17.7) = 72.3°
Since the sum of the two complement angles is 90⁰ , then the complement of a 60⁰ angle is a 30⁰ angle.
Complement = 90 degrees.