Question

In a triangle abc ,a is50 degree more than bandc is 20 degree less than



b. what are the angles of a triangle

Answer 1

let the angle b be x
then,a=x+50
c=x-20
value of the total angle of triangle=180
180=x+x+50+x-20
180=3x+30
180-30=3x
150=3x
x=150/3
x=50
so,a=x+50
=50+50
=100
b=x
=50
c=x-20
=50-20
=30