Question

find the measure of the complement of an 81° angle.
the measure of the complement of an 81° angle is
(simplify your answer. type an integer or a decimal.)

Explanation:

Step1: Recall the definition of complementary angles

Complementary angles add up to 90°.

Step2: Calculate the complement

Let the complement of the 81° angle be \(x\). Then \(x + 81^{\circ}=90^{\circ}\), so \(x = 90^{\circ}-81^{\circ}\).
\(x=9^{\circ}\)

Answer:

9