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If (1,-2,-2) and (0,2,1) are direction r...

If (1,-2,-2) and (0,2,1) are direction ratios of two lines, then direction cosines of a line perpendicular to both the lines are

Answer

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Knowledge Check

  • If the direction ratios of the lines L_(1)andL_(2) are 2, -1, 1 and 3, -3, 4 respectively, then the direction cosines of a line that is perpendicular to both L_(1)andL_(2) are

    A
    `pm2/sqrt6,pm1/sqrt6,pm1/sqrt6`
    B
    `pm1/sqrt35,pm5/sqrt35,pm3/sqrt35`
    C
    `pm3/sqrt34,pm3/sqrt34,pm4/sqrt34`
    D
    `pm1/sqrt14,pm2/sqrt14,pm3/sqrt14`

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    The direction ratios of a line are (-6,2,3) Find its direction cosines.

    The direction ratios of a line are (-6,2,3) .Find the its direction cosines .

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    The direction ratios of two lines AB, AC are 1, -1, -1 and 2, -1, 1. The direction ratios of the normal to the plane ABC are

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