Question
In a triangle, the three interior angles are in the
ratio 3 : 4 : 5. What is the measure of the largest angle?Solution
ATQ, Let angles be 3k, 4k, 5k. Sum of angles in a triangle = 180° 3k + 4k + 5k = 12k = 180° k = 180/12 = 15° Angles = 3k = 45°, 4k = 60°, 5k = 75° Largest angle = 75°
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