Question

If A vector =A x I +A y j +A z k and B vector = B x I + B y j + B z k, then find the unit vectors perpendicular to the plane of two vectors.

Answer 1

the required unit vector (let it is "a") will be along cross product of vectors A & B.

a = (A x B) / |A x B|

or,

a = - (A x B) / |A x B|