Question

In triangle ABC,if AB=AC and angle A =100, then find angle B and C ​

Answer 1

Step-by-step explanation:

in triangle ABC

Angle A =100°

Angle B = Angle C ( because angle opposite to equal side are equal )

Angle A + Angle B +Angle C = 180° ( Angle Sum property)

100° + Angle B + Angle B = 180°

2 Angle B = 180° -°100

Angle B = 80°÷2

Angle B = 40°

Angle C =40°

Answer 2

angle ABC

AB=AC

A=100°

find angle B and C let angle Band C =x

sum of all angle of triangle =180°

A + B + C = 180°

100°+ x + x = 180°

2x = 180°-100°

x = 80°/2

x = 40°

A = 100°

B = 40°

C = 40°