Question

Angle B measures 60°. What is the measure of the angle that is complementary to angle B?

Answer 1

Complementary angles add up to 90.
Say the complementary angle is A. 
Angle A + Angle B = 90
Angle A + 60 = 90
Angle A = 30 degrees

Hope this helps :)

Answer 2

Answer:

Measure of angle that is complementary to angle B is 30°

Step-by-step explanation:

Given: Measure of angle B ,  ∠B = 60°

To find: Measure of angle which is complimentary to angle B

Complementary angles are the angles whose sum is equal to right angle or say 90°.

Let the complementary angle of ∠B is ∠A

then

∠A + ∠B = 90°

∠A + 60° = 90°

∠A = 90° - 60°

∠A = 30°

Therefore, Measure of angle that is complementary to angle B is 30°