Question

Find the angle which is four times its complement.

• A. 72°
• B. 27°
• C. 108°
• D. 63°

Answer 1

The correct option is A 72°

Let the measure of the required angle be x°

Then, measure of its complement = (90 – x)°

Therefore,

x = 4(90 – x)

x = 360 – 4x

5x = 360

x = 72°

Hence, the measure of the required angle is 72°.
Therefore, option 'b' is correct