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Question

If three angles of a triangle are in the ratio 2:3:4, then the measure of the three angles are:

A
20,60,100
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B
40,60,80
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C
40,50,90
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D
50,60,70
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Solution

The correct option is B 40,60,80
Let the three angles of a triangle be 2x, 3x, 4x.
Sum of the angles in a triangle = 180
2x+3x+4x=180
9x=180
x=20
2(20)=40,3(20)=60 and 4(20)=80.

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