Question

x 45° 47√12

Explanation:

Step1: Use the exterior angle theorem

The exterior angle of a triangle is equal to the sum of the two non - adjacent interior angles. In a right - angled triangle, one of the non - adjacent interior angles is \(45^{\circ}\) and the other is \(90^{\circ}\).

Step2: Calculate the value of \(x\)

\(x=90^{\circ}+45^{\circ}\)

Answer:

\(135^{\circ}\)