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JEE Main & Advanced AIEEE Solved Paper-2009

  • question_answer
    The projections of a vector on the three coordinate axis are 6, -3, 2 respectively. The direction cosines of the vector are     AIEEE  Solved  Paper-2009

    A) 6, -3, 2                  

    B) \[\frac{6}{5},\frac{-3}{5},\frac{2}{5}\]                    

    C) \[\frac{6}{7},\frac{-3}{7},\frac{2}{7}\]    

    D)        \[\frac{-6}{7},\frac{-3}{7},\frac{2}{7}\]

    Correct Answer: C

    Solution :

    The DCS are\[\frac{6}{7},\frac{-3}{7},\frac{2}{7}\].


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