Question

In a triangle ABC, if angle A- angle B = 42° and angle B - anhle C = 21° then angleB = ?​

Answer 1

Answer :- 117°

Step-by-step explanation:

Angle sum of a triangle - 180°

angle A + angle B + angle C = 180°

42°+ angle B + 21°= 180°

Angle B = 180°-63°

= 117°

I hope it helps you more! :)