Question

In a triangle ABC,Angle B=angle C and angle A=100 degree.Find angle B.​

Answer 1

Answer:

B = 40° and C = 40°

Step-by-step explanation:

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Answer 2

Answer:

angle B = 40 degree

Step-by-step explanation:

In a triangle, there are three sides,

Let us take angle B and C as x each.

therefore,

100+x+x=180 {SINCE, SUM OF THREE ANGLES OF A TRIANGLE IS 180

                       DEGREE}

100+2x = 180

2x = 180-100

2x = 80

x = 80/2

x = 40

So, angle B = 40 degree