Question

find the measure of the missing angle.

Explanation:

Step1: Recall the property of a right angle

A right angle measures \(90^{\circ}\).

Step2: Calculate the missing angle \(a\)

Since the sum of the two angles (\(a\) and \(42^{\circ}\)) is \(90^{\circ}\), we use the formula \(a = 90^{\circ}-42^{\circ}\).

$$a=90^{\circ}-42^{\circ}=48^{\circ}$$

Answer:

\(48^{\circ}\)