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Homework Help: Discrete; lines problem

  1. May 2, 2007 #1
    1. The problem statement, all variables and given/known data

    find the parametric equations of the line through A(-3,2,5) and is perpendicular to both line 1 and line 1 where

    line 1: (x-4)/3=y-2=(z-3)/-2
    line 2: (x,y,z)=(-1,1,5)+k(-1-2,3)

    2. The attempt at a solution

    i think i need to find the normal for the line 1 and line 2.. but i'm not sure.. also i have a unit test on this tomorrow.. so any help would be great
  2. jcsd
  3. May 2, 2007 #2


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    You need to find tangent vectors to both line1 and line2. Can you start by doing that? Are you, by any chance, in the same test as passenger48?
  4. May 3, 2007 #3
    oh i finally figured it out.. i just need to do the cross product of the two dirction vectors of the two line..
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