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Math Help - finding a direction vector , perpendicular to two lines

  1. #1
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    Exclamation finding a direction vector , perpendicular to two lines

    Find a direction vector of the line that is perpendicular to both:

    (x+1)/3=(y+1)/8=(z+1)/12 and (1-2x)/-4=(3y+1)/9=z/6 .
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  2. #2
    MHF Contributor
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    Find a direction vector for each line and then take the cross-product of them both.
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  3. #3
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