Question

anybody can solve it

Answer 1

here given that

in triangle ABC

AB = BC
angle B = 80°

SO
A+B+C = 180° In triangle
thus

AB= BC ,
SO
angle a = angle C
Now

A+ B+C = 180°
2A+ B = 180°

2A + 80° = 180°
2A =180°- 80°

2A = 100°

A = 50° Ans


Hope it's helpful ✌✌