Question 5719
let the angles of a triangle be A,B,C
A = 3B
C=2B-6
again we know A+B+C=180 degree
substituting the value of A and C in the abve equation we have
3B +B +2B-6 =180
or 6B = 180+6= 186
or B = 186/6 =31
so A = 3B = 3*31= 93 degree
C = 2B-6 = 2*31-6 = 62-6=56

so A = 93 degree
B = 31 degree
C = 56 degree

Ans