# Math Help - Unit Normal Vecotr Help

1. ## Unit Normal Vecotr Help

I need help answering the following question.
"Find a normal unit vector to the plane containing v=2i+3j-k and z=-3i-j-4k."
All help is appreciated.

2. Originally Posted by collegemath
I need help answering the following question.
"Find a normal unit vector to the plane containing v=2i+3j-k and z=-3i-j-4k."
All help is appreciated.
hint: the vector (cross) product of two vectors is perpendicular to both vectors.

3. so is the normal unit vector just the cross product (v X z)?

4. Originally Posted by collegemath
so is the normal unit vector just the cross product (v X z)?
Almost try: $\dfrac{v\times z}{\|v\times z\|.}$