Question

In ∆ABC, BC = AB and ∠B = 80°. Then ∠A is equal to:​

Answer 1

Answer:

∠A= 50

EXPLANATION-

as BC = AB,

∠C = ∠A (EQUAL SIDES HAVE EQUAL OPPOSITE

ANGLES)

LET THESE ANGLES BE x

therefore x+x+80 = 180 (angle sum property of triangle)

therefore 2x= 180-80

therefore x = 100/2

thus x = 50

therefore ∠A=50 &

∠C=50