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Homework Help: Area of a triangle formed by vectors

  1. May 27, 2007 #1
    1. The problem statement, all variables and given/known data

    What is the area of a triangle formed by the vectors 2i-j+3k and i+2j+2k.

    3. The attempt at a solution

    I didn't know it was possible to find the area with only 2 vectors!:confused:
    Can somebody please show me how?
     
  2. jcsd
  3. May 27, 2007 #2
    I imagine the third side of said triangle is the length between both of the vectors.

    That said, this seems to be a tricky problem because of the three dimensions involved, I'm thinking about it now.
     
  4. May 27, 2007 #3
    I found this on the net...

    v1124x.gif

    v1125x.gif

    Helpful?
     
  5. May 27, 2007 #4
    Yeah i figured it out using vector products!!
     
  6. May 27, 2007 #5

    malawi_glenn

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    Science Advisor
    Homework Helper

    Did you check your text book in linear algebra? This is standard problems.
     
  7. May 27, 2007 #6
    Wasn't in my textbook..
     
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