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

Two angles are said to be complementary angles if they add up to 90 degrees.

## Answer: Angle a = 30° is the measure of the angle that is complementary to angle b = 60°

Let us find the complementary angle of angle b.

**Explanation:**

Given that angles a and b are complementary.

⇒ ∠a + ∠b = 90°

⇒ ∠a + 60° = 90° --------------> given ∠b = 60°

⇒ ∠a = 90° - 60°

⇒ ∠a = 30°