Question

In triangle ABC AB is equal to BC angle b is equal to X degree and Angle A is equal to 2 x minus 20 degree find Angle B

Answer 1

<a =2x-20,<b=x,
<c= 2x-20(isosceles triangle)
sum of all angle 180°
2x-20+2x-20+x=180°
5x-40°=180°
5x=140°
x=28=b

Answer 2

Answer:

Step-by-step explanation:

Answer:

Step-by-step explanation:

A=2x-20

B=x

So,C=2x-20 ( isoceles triangle)

So, X + 2X-20 +2X-20 = 180

5X-40 = 180

5X = 180 + 40

X = 220/5

X = 44