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    Question

    The measures of two angles of a triangle are in the

    ratio 3 : 7. If the sum of these two measures is equal to the measure of the third angle, then find the smallest angle.
    A 27° Correct Answer Incorrect Answer
    B 3° Correct Answer Incorrect Answer
    C 9° Correct Answer Incorrect Answer
    D 36° Correct Answer Incorrect Answer

    Solution

    Let the angles of triangles =A, B and C A                  B                      C 3       :           7          :           10 The sum of triangle angles =180 ATQ- 20 =180° 1=9° Smallest angle =3×9° =27°

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