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JEE Main & Advanced Mathematics Three Dimensional Geometry Question Bank System of Co-ordinates, Direction cosines and direction ratios, Projection

  • question_answer
    A point \[(x,y,z)\] moves parallel to x-axis. Which of the three variable\[x,y,z\]remain fixed

    A)            x

    B)            y and z

    C)            x and y

    D)            z and x

    Correct Answer: B

    Solution :

               Equation of x-axis is \[y=0,\,\,z=0.\] Hence y and z remain fixed.


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