Finding Unit Normal Vector of 2 Vectors

[milan666]

Homework Statement

Im given two vectors and I am told to find theyre unit normal vector.

Homework Equations

a x b

The Attempt at a Solution

I used the cross product of the 2 vectors to find the normal vector, however, it came out to be i + j + k. My question is, is this already a unit vector or do i need to use the equation $$\hat{}n$$ = n/$$\left|n\right|$$?

 

[sumit sawai]

i+j+k is not a unit vector unit vector has magnitude 1 unit vector in the direction of i+j+k is (i+j+k)/3^.5

 

[milan666]

Understood, thank youuuuuu.