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Find a unit vector...

by MozAngeles
Tags: unit, vector
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MozAngeles
#1
Jun6-11, 11:55 AM
P: 90
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??
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rock.freak667
#2
Jun6-11, 12:34 PM
HW Helper
P: 6,204
Quote Quote by MozAngeles View Post
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??
BxC would give satisfy the conditions yes, but you will need to get the unit vector of BxC.
MozAngeles
#3
Jun6-11, 12:40 PM
P: 90
So my answer would be 1/[tex]\sqrt{35}[/tex](5i+3k-j)?

rock.freak667
#4
Jun6-11, 09:18 PM
HW Helper
P: 6,204
Find a unit vector...

Yes, assuming you calculated BxC correctly.


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