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  3. CEE Kerala Engineering

CEE Kerala Engineering CEE Kerala Engineering Solved Paper-2002

  • question_answer
    The angles of a triangle are in the ratio\[1:3:5\]. Then the greatest angle is:

    A)  \[\frac{5\pi }{9}\]                                           

    B)         \[\frac{2\pi }{9}\]

    C)         \[\frac{7\pi }{9}\]                                           

    D)         \[\frac{11\pi }{9}\]

    E)         \[\frac{\pi }{9}\]

    Correct Answer: A

    Solution :

    Let\[x,3x\]and\[5x\]are angles of triangle \[\therefore \] \[x+3x+5x=\pi \] \[\Rightarrow \] \[x=\frac{\pi }{9},\] so greatest angle \[=\frac{5\pi }{9}.\]


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