Question

The angle of a triangle ABC are in the ratio 2:3:4,find the largest angle of the triangle

Answer 1

Answer:

the sum of triangle is 180 degree

let ratios be 2x, 3x and 4x

2x + 3x + 4x = 180

9x = 180

x = 180/9 =20

angles are

2x = 2* 20 = 40

3x = 3*20 = 60

4x = 4*20 = 80

so the largest angle is 80 degree

Answer 2

Answer:

the angles are 2x, 3x, 4x.

the sum of all angles of the triangle = 180

so, 2x + 3x + 4x = 180

9x = 180

x. = 180/9

x. = 20

the largest angle of the triangle = 4x =4 x 20 =80