Question

Angle A and angle B are complementary

The measure of angle A is (5x + 15)°
• The measure of angle B is 30°
What is the value of x?​

Answer 1

Explanation:

∠A + ∠B = 90° {given they are complementary}

5x+ 15 + 30 = 90

5x + 45 = 90

5x = 90 - 45

5x = 45

x = 45/5

x = 9