Question

In triangle ABC, Angle B is equal to Angle C and Angle A is equal to 100°
Find angle B ​​

Answer 1

Answer:

AB = AC B = C [Angles opposite to equal sides are equal]In ABC , A + B + C = 180° 100° + 2 B = 180° B = 40° Therefore, B = C = 40°

Answer 2

Answer:

AB=AC

∠B=∠C          [Angles opposite to equal sides are equal]

In △ABC,

∠A+∠B+∠C=180o

100o+2∠B=180o

∠B=40o

Therefore,

∠B=∠C=40o