Question

If <A and <B are supplementary angles and m<A = 4m<B, find m<A and m<B.

help !!! urgent!!!!!! ​

Answer 1

m∠A = 144°, m∠B = 36°

Explanation:

Supplementary angles are angles that add up to 180 degrees.

Substitute 4(m∠B) for m∠A.

4(m∠B) + m∠B = 180

5(m∠B) = 180

m∠B = 36°

Substitute 36 for m∠B.

4(36) = m∠A

m∠A = 144°