Question

x 45° 47√12

Explanation:

Step1: Use the property of exterior angles of a triangle

The exterior angle \(x\) of a right - angled triangle is equal to the sum of the two non - adjacent interior angles.

Step2: Calculate the value of \(x\)

Since one non - adjacent interior angle is \(90^{\circ}\) and the other is \(45^{\circ}\), then \(x = 90^{\circ}+45^{\circ}\)

Answer:

\(135^{\circ}\)