angle b measures 60°. what is the measure of the angle that is complementary to angle b?\n30°\n60°\n120°\n180°

Answer:

A. 30°

Explanation:

Step1: Recall complementary - angle definition

Two angles are complementary if their sum is 90°.

Step2: Set up the equation

Let the complementary angle to angle B be x. Then x + 60°=90°.

Step3: Solve for x

x = 90° - 60° = 30°.