Question

solve ...............

Answer 1

Let the common ratio be a
Then... 2a+3a+4a=180(bcoz 180 is the sum of angles of a triangle)
9a=180
a=20

So the angles are 40 degrees... 60 degrees... 80 degrees

Answer 2

angle of the triangle are in the ratio 2:3:4
angle of the triangle = 2x, 3 x ,4 x

2x +3x +4x =180
9x = 180
x = 180/9
x=20

2x=40°
3x=60°
4x=80°

option 2