Question

In angle ABC if ∆A=100 and AB=AC.find ∆B ∆C

Answer 1

Answer:

Angle B = 40°

Angle C = 40°

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.GIVEN(AB=AC)

.Angle A + Angle B + Angle C = 180°

100°. +. Angle B + Angle C = 180°

100°. +. 2x. = 180°

2x. = 180° - 100° = 80°

x. =80/2

x. =40°

so Angle B = 40°

Angle C = 40°