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Find a unit vector

  1. Jun 6, 2011 #1
    1. The problem statement, all variables and given/known data

    Find a unit vector orthogonal to A in the plane B and C if A=2i-j+k B=i+2j+k and C=i+j-2k

    2. Relevant equations

    3. The attempt at a solution
    Im thinking the solution is to take the cross product of B and C. and that would be the solution??
  2. jcsd
  3. Jun 6, 2011 #2


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    Homework Helper

    BxC would give satisfy the conditions yes, but you will need to get the unit vector of BxC.
  4. Jun 6, 2011 #3
    So my answer would be 1/[tex]\sqrt{35}[/tex](5i+3k-j)?
  5. Jun 6, 2011 #4


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    Homework Helper

    Yes, assuming you calculated BxC correctly.
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