Question

The value of angle A is ______.

Options

• 45°

• 30°

• 60°

• none of these

Answer 1

The value of angle A is 45°.

Explanation:

Since the triangle is an isosceles right-angled triangle where the two perpendicular sides are equal, the base angles are equal. Therefore, angle \[A = \frac{180^\circ - 90^\circ}{2} = 45^\circ\].