Question

In triangle abc ac=bc if angle a=40°.find the measure of angle b and angle c

Answer 1

Since ac=bc and angle a is 40° therefore since angles opposite to equal sides are equal therefore b=40° and by angle sum property a+b+c=180 therefore c=100°

Answer 2

70 each .. as AB=BC angle b=c
reason angles opp to equal sides are equal.
angle a=40 So a+b+c =180 (A.S.P)