Question

What is the complementary angle of an angle that measures 30 degrees?

A. 90 degrees
B. 20 degrees
C. 150 degrees
D. 60 degress

Answer 1

Explanation:

If 2 angles are complementary, that means that they add up to 90 degrees.

The angle complementary to a 30-degree angle has to measure 60 degrees. D is your choice.