Question

find ( mangle 1 ).

Explanation:

Step1: Analyze the right - angled triangle properties

In a right - angled triangle, the sum of angles is \(90^{\circ}\).

Step2: Calculate \(m\angle1\)

Since one angle is \(35^{\circ}\) in the right - angled triangle where \(\angle1\) is located, and the sum of angles in a right - angled triangle is \(90^{\circ}\). So \(m\angle1=90^{\circ}-35^{\circ}\)

Answer:

\(55^{\circ}\)