u=<3,-2,1> v=<2,-4,-3> and w=<-1,2,2>

Determine a unit vector perpendicular to the plane containing v and w.

I dont understand how to find it perpendicular containing v and w???

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- Jun 4th 2008, 02:59 PMchris25unit vectors
u=<3,-2,1> v=<2,-4,-3> and w=<-1,2,2>

Determine a unit vector perpendicular to the plane containing v and w.

I dont understand how to find it perpendicular containing v and w??? - Jun 4th 2008, 03:03 PMo_O
Not sure why you need the vector u. Basically, when you take the cross product between v and w, the resultant vector will be orthogonal to v

**and**w - indicating that it'll also be orthogonal to the plane created by v and w as well.

So take the cross product between w and v to get your resultant vector, let's call it**s**. Now, to find the unit vector: