Question

in a triangle ABC if angle A minus Angle B equal to 40 degree and Angle B minus angle c equal to 10 degree find the measure of Angle A Angle B and angle C​

Answer 1

let angle A=x

angle B=x-40°

angle C=x-50°

in triangle sum of all angles is 180°

x+x-50°+x-40°=180°

3x-90°=180°

3x=270°

x=90°

angle A=90°

B=50°

C=40°