Question

In triangle ABC. if ∠A + ∠B = 120⁰ and ∠B + ∠C = 100⁰ then find value of ∠B-
don't write unnecessary ​

Answer 1

Answer:

140 degrees.

Answer 2

Answer:

A+B =120 °

C + A+ B = 120° +C [ adding C to both sides

equals are added to equals are equal]

180° = 120 + C

C=60°

Now,

B+C=100°

B+60=100

B=40°