How do you calculate parallel vectors?

[BOAS]

Sorry - Answered my own question.

 

[kashokjayaram]

To find a vector which is perpendicular to 2 others, just find the cross product between the two.

Let A(1,-1,2) and B(2,1,-3).

A x B will be perpendicular to both vectors A and B.
(I hope you know to find cross product)

To find unit vector just divide the resultant with the norm.