Question

if ∠a and ∠b are complementary angles, then m∠a + m∠b = ab. suggested tutorial: learn it: determine unknown angle measures using relationships between comp resources ebook submit answer

Explanation:

Step1: Recall complementary - angle definition

Complementary angles add up to 90 degrees.

Step2: Correct the equation

If $\angle A$ and $\angle B$ are complementary angles, then $m\angle A + m\angle B=90^{\circ}$.

Answer:

$90$