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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?




42−x=90

90+x=42

42+x=90

90+42=x

Respuesta :

Answer:

42+x=90

Step-by-step explanation:

Complementary angles are when their measures add up to 90°

Therefore, if angle a is 42° you would find angle b by subtracting 42° from 90° which is shown in equation number three.