Question

the angle of the triangle ABC are in the ratio 2 : 3 : 4. find the largest angle of the triangle

Answer 1

let the angles be 2x,3x,4x
so,
2x+3x+4x=180
9x=180
x=20
2x=2×20=40
3x=3×20=60
4x=4×20=80

so 80 is the largest angle of the triangle....

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