Question

Angles A and B are complementary. If the measure of ∠A is 20°, what is the measure of ∠B?

Answer 1

Option A is correct.

Angle B = 70°

Step-by-step explanation

Complementary angles sum up to give 90°

If A and B are complementary angles, then,

A + B = 90°

20° + B = 90°

B = 90° - 20°

B = 70°

Hope this Helps!!!