Question

In ∆abc angle B = angle c and angle A = 100°; find angle B.

Answer 1

Answer:

Angle B = 40 degrees

Step-by-step explanation:

In a triangle; sum of the three interior angles = 180

Let angle B = angle C = x

This implies, A+B+C=180

100 + 2x = 180

2x = 80

x=40