Question

53.If angles of a triangle are in the ratio 2:3:4. What is the value of greatest angle? ​

Answer 1

ratio= 2:3:4

then 2x + 3x + 4x =180

9x=180

x=20

2x=40

3x=60

4x=80

value of greatest angle =80

Answer 2

let the multiple to be x

Now angles are 2x,3x and 4x

2x+3x+4x=180(angle sum property of triangle)

9x=180

x=180/9 x=20

greatest angle 4x=4×20=80degree

explanation

•why we multiply x? (example)

simple form =30/10=3/1

so ratio of 30/10 is 3:1

In above question we have ratio so he have to multiply