CEE Kerala Engineering CEE Kerala Engineering Solved Paper-2002

  • question_answer
    The angle between the lines\[2x-y+3=0\] and\[x+2y+3=0\]is:

    A)  \[90{}^\circ \]                                  

    B)        \[60{}^\circ \]

    C)         \[45{}^\circ \]                                  

    D)        \[30{}^\circ \]

    E)         \[180{}^\circ \]

    Correct Answer: A

    Solution :

    The given lines are \[2x-y+3=0\] and        \[x+2y+3=0\] \[\therefore \] \[{{a}_{1}}{{a}_{2}}+{{b}_{1}}+{{b}_{2}}=(2)(1)+(-1)(2)=0\] \[\therefore \]angle between the given lines is \[90{}^\circ \].


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