Question

in an isosceles triangle ABC AB=AC angleA =3 angleB, then angle A is​

Answer 1

Answer:

angle A = 36 degree

Step-by-step explanation:

AB = AC

and angle A = 3 * angle B.

As it is an isosceles triangle and AB = AC

angle C = angle B

let angle C = angle B = x

then angle A = 3 * angle B

                      = 3x

as sum of angles of a triangle is equal to 180.

angle A + angle B + angle C =180

3x + x + x = 180

5x = 180

x = 180/5

x = 36