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    Question

    Angles of a triangle are in the ratio 3 : 5 : 10. Find

    the sum of the smallest and middle angle of the triangle.
    A 90┬░ Correct Answer Incorrect Answer
    B 75┬░ Correct Answer Incorrect Answer
    C 80┬░ Correct Answer Incorrect Answer
    D 120┬░ Correct Answer Incorrect Answer

    Solution

    Let the measure of the angles of the given triangle be '3x┬░', '5x┬░', and '10x┬░', respectively. Sum of angles of a triangle = 3x + 5x + 10x = 180┬░ So, x = (180┬░/18) = 10┬░ Therefore, the sum of smallest and middle angles of the triangle = 3x + 5x = 8x = 8 ├Ч 10┬░ = 80┬░ Hence,option c┬а

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