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

$\displaystyle (x+1)/3=(y+1)/8=(z+1)/12$ and $\displaystyle (1-2x)/-4=(3y+1)/9=z/6$ .

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- Feb 17th 2010, 01:34 PMshawlifinding a direction vector , perpendicular to two lines
Find a direction vector of the line that is perpendicular to both:

$\displaystyle (x+1)/3=(y+1)/8=(z+1)/12$ and $\displaystyle (1-2x)/-4=(3y+1)/9=z/6$ . - Feb 17th 2010, 01:40 PMicemanfan
Find a direction vector for each line and then take the cross-product of them both.

- Feb 17th 2010, 02:52 PMmath2009