Question

∠A and angle ∠B are complementary angles. If angle ∠A=(4x−13) and angle ∠B=(x−12) , then find the measure of \angle B∠B.

Answer 1

<B = 11

Explanation:

4x-13+x-12=90

5x-25=90

+25 +25

5x=115

divide by 5

x=23

<B = x-12

substitute for x

23-12= 11 <B=11