Question

Angle a​ and​ ​angle b​ ​are complementary angles. The measure of ∠a is 42°.

Which equation represents this situation with x representing the measure of ∠b ?



A. 90+x=42

B. 90+42=x

C. 42+x=90

D. 42−x=90

Answer 1

I believe your answer would be B