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Finding Common perpendicular of two lines

  1. Mar 21, 2012 #1
    Hi there,
    The two given lines:
    1) x / 2 = (y-1) / 2 = z
    2) x + 1 = y – 2 = (z + 4) / 2
    I need to find the common perpendicular between them.
    Though when I tried to calculate the distance between them, I get 0.

    Can someone please help?

    Thanks in advance
     
  2. jcsd
  3. Mar 21, 2012 #2
    how do you find a vector that is perpendicular to two given vectors?
     
  4. Mar 21, 2012 #3
    Cross product...but how would I find the two vectors?
     
  5. Mar 21, 2012 #4
    pick any two points on the same line, what about their difference?
     
  6. Mar 21, 2012 #5

    LCKurtz

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