Question

question find the measure of the missing angle.

Explanation:

Step1: Recall angle - sum property

The sum of complementary angles is 90°.

Step2: Set up equation

Let the missing angle be \(a\). We know one angle is 69°. So \(a + 69^{\circ}=90^{\circ}\).

Step3: Solve for \(a\)

\(a=90^{\circ}- 69^{\circ}\).
\(a = 21^{\circ}\)

Answer:

\(a = 21^{\circ}\)