Question

In triangle ABC angle a=x ,angle b=(3x -2) and angle c=y. Also angle c- angle b=9. Find the three angles.

Answer 1

Step-by-step explanation:

A+B+C=180°

(all angles of a triangle measure 180°)

a=x

b=3x-2

c=y

also,

c-b=9

c=9+b

=9+3x-2

=3x+7

substituting the values

x+3x-2+3x+7=180

7x+5 =180

x=175/7

X=25

A=25

B=3×25-2

=73

C=3×25+7

=82