What is the unit vector that is normal to the plane containing <1,1,1> and <2,0,-1>?
1 Answer
Nov 8, 2016
The unit vector is
Explanation:
You must do the cross product of the two vectors to obtain a vector perpendicular to the plane:
The cross product is the deteminant of
We check by doing the dot products.
As the dots products are
The unit vector is