Question

what angle is complementary to 47°?
o 133°
o 53°
o 47°
o 43°

Explanation:

Step1: Recall complementary - angle definition

Complementary angles add up to 90°.

Step2: Calculate the complementary angle

Let the complementary angle be \(x\). Then \(x + 47^{\circ}=90^{\circ}\), so \(x = 90^{\circ}-47^{\circ}\).
\(x = 43^{\circ}\)

Answer:

D. \(43^{\circ}\)