Question

triangle ABC ,BC=AB and LB=80 degree then La ?​

Answer 1

Answer:

HEY HERE IS YOUR ANSWER

Step-by-step explanation:

BC=AB( GIVEN)

ANGLE A IS EQUAL TO ANGLE C( opposite side of angle is equal)

Let the angles be x

Now, by angle sum property

Angle A +angle B +angle C is equal to 180 degree

X +180 degree+ X = 180 degree (angle A =X by assume and C is also assume)

2x =180 degree - 80 degree

2x =100 degree

X = 50 degree

hence, angle A= 50 degree