Question

∠A and angle ∠B are complementary angles. If angle A=(x+1)∘ and angle B=(7x-15), then find the measure of angle ∠B.

Answer 1

76 degrees

Explanation:

x + 1 + 7x - 15 = 90

8x - 14 = 90

8x = 90 + 14

8x = 104

8/8 x = 104/8

x = 13

B = 7 * 13 - 15

B = 91 - 15

B = 76 degrees