Question

find the value of angle A if in triangle abc a b barabar BC and Angle B 90

Answer 1

Answer:

Angle A=45°

Step-by-step explanation:

In the question AB is equal to BC.

So, this is an isosceles triangle with Angles A and C as it's base Angles.

As, we know that the base Angles of an isosceles triangle are always same.

angleA=angleC

AngleB=90°,angle a+ angle c =180-90°=90°

angle a=(90/2)°=45°