Question
Angles of a triangle are in the ratio 5 : 6 : 7. Find
the measure of the smallest angle.Solution
Let the measure of the angles of the given triangle be '5x°', '6x°', and '7x°', respectively. Sum of angles of a triangle = 5x + 6x + 7x = 180° So, x = (180°/18) = 10° Therefore, the smallest angle of the triangle = 5x = 5 × 10° = 50° Hence, option a.
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