Question

in triangleABC, BC=CA and A=4O°find the largest side og triangle ABC​

Answer 1

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Given:- ABC is a triangle whose BC=CA and Angle A =40°

We know that when two sides are equal then their opposite angles are always equal

therefore, Angle A = Angle c

Therefore, Angle C =40°

We know that sum of three angles of a triangle=180°

Angle A +Angle B+Angle C =180

Therefore Angle B+40+40=180

therefore Angle B=180-40-40

therefore Angle B=100

Angle B=100°

we know that opposite side of largest angle of a triangle is the largest side

and the opposite side of angle B=Ac