Question

angle b measures 60°. what is the measure of the angle that is complementary to angle b?
○ 30°
○ 60°
○ 120°
○ 180°

Explanation:

Step1: Recall complementary angles definition

Complementary angles sum to \(90^\circ\). So if angle \(B = 60^\circ\), let the complementary angle be \(x\). Then \(x + 60^\circ=90^\circ\).

Step2: Solve for \(x\)

Subtract \(60^\circ\) from both sides: \(x = 90^\circ - 60^\circ = 30^\circ\).

Answer:

\(30^\circ\) (corresponding to the first option, e.g., A. \(30^\circ\) if options are labeled A - D as such)