Question

in a triangle ABC, A is 50° more than B and C is 20 degree less than B. What are the angles of triangle

Answer 1

Let take A as x so,
A=x
so,
B=x-50
C=x-70(because B is 50 less than A which makes C 70 less than A
so,
x+x-50+x-70=180(because all angles add up to 180 in a triangle)
3x-120=180
3x=180+120
3x=300
x=100
so, A=x=100
B=x-50=50
C=x-70=30

HOPE THIS HELPS