Question

If ∠A and ∠B are complementary angles and m∠B = 68°, find m∠A.

Answer 1

∠A = 22°

Explanation:

complementary angles is either of two angles whose sum is 90°

∠A + ∠B = 90°

m∠B = 68°

∠A + 68° = 90°

subtract 68 from both sides

∠A + 68° - 68 = 90° - 68

∠A = 22°

Answer 2

22°

Explanation:

complementary angles sum up to 90°

M<A+M<B= 90° ( complementary angles)

M<A+ 68° = 90°

M<A = 90-68= 22°

M<A= 22°