What is the unit vector that is orthogonal to the plane containing # ( - 4 i - 5 j + 2 k) # and # ( i + 7 j + 4 k) #?
1 Answer
Nov 12, 2016
The unit vector is
Explanation:
We start by calculating the vector
We do a cross product
To calculate the unit vector
Let's do some checking by doing the dot product