Question
The angles of a triangle are in the ratio 4:5:3.
Determine the sum of the smallest and largest angles of the triangle.Solution
Let the measure of the angles of the given triangle be '4xo ', '5xo ', and '3xo ', respectively. Sum of angles of a triangle = 4x + 5x + 3x = 180 o So, x = (180 o /12) = 15 o Therefore, the sum of smallest and largest angles of the triangle= 5x + 3x = 8x = 8 X 15 o  = 120 o
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