set x = the compliment
90 = x + 9 + 2x = 3x +9
90 = 3x + 9
81 = 3x
27 = x = the compliment
90 - x = 63 degrees
90 degrees
An angle and its complement add to 90 degrees. Hence an angle of 41 degrees has 49 degrees as its complement.
The complement is 60 degrees.
40 degrees
30 degrees
An angle and its complement sum to ninety degrees. 90-52=38
OBTUSE
The complement is how much you have left after you subtract the first angle from 90 degrees.
The sum of an angle and its complement is 90 degrees. So the unknown angle must be 90 - 75 = 15 degrees.
It is 28 degrees
The complement of an acute angle A is the angle 90° - A. The complement of 13° is 77°.
Complement of an angle = (90 - the given angle) Here we have this = (90 - 16) = 74 degrees