rileyhayward213 rileyhayward213 18-12-2020 Mathematics contestada ∠A and \angle B∠B are complementary angles. If m\angle A=(3x+9)^{\circ}∠A=(3x+9) ∘ and m\angle B=(x-11)^{\circ}∠B=(x−11) ∘ , then find the measure of \angle A∠A.
