Question

If m∠A = 70^°, what is the measure of the supplement of the complement of ∠A?

Answer 1

Let the measure of the complementary angle be a.
70 + a = 90
∴ a = 20°
Let the measure of the supplementary angle of 20° be x.
20 + x = 180
∴ x = 160°
Hence, the measure of the supplement of the complement of ∠A is 160°.