The angles of a triangle are in the ratio of 2 : 3 : 4. The largest angle in the triangle is :

The angles of a triangle are in the ratio of 2 : 3 : 4. The largest angle in the triangle is : Correct Answer 80 degree

the sum of all angles of a triangle is 180 . 2x + 3x + 4x = 180 = > 9x = 180  = > x = 180/9 ∴ x = 20 the largest angle is 20×4 = 80 degree
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