Vectors
posted by Ariza .
Determine a unit vector that is orthogonal to both u=[3,4, 1] and v=[2,3,4].

do cross product (perpendicular to both)
i j k
3 4 1
2 3 4
(163)i + (2+12)j + (9+8)k
13 i + 14 j + 17 k
divide every coefficient by
sqrt (169 + 196 + 289)
to make it a unit vector