Question

ABC is a right angled triangle in which angle a=90° and AB=AC show that angle B =angle C

Answer 1

in a triangle angles opposite to equal sides are equal
angle b is opp to ab and angle c is opp to ac therefore angle a =angle b

Answer 2

In triangle ABC AB=AC .
Because
Side opp to greater angle
Is always greater
By Pythagorean theorem it can prove