Question

In a right angled triangle where angle A= 90° and AB=AC. What are the values of angle B.​

Answer 1

Step-by-step explanation:

Given ∆BAC is a triangle right angled at A.

AB = AC

This means it is a isosceles triangle with base and height of same length.

In this case the opposite angles must be equal and adds up to 90°. why? Because one 90° is already fixed at Angle A. The remaining Angle B and C must be equal and adds up to 90° to fulfill the angle sum property of a triangle.

We know 90° = 45° + 45°

So, angle B = 45°