example cross product
Example: cross product
Let a be a vector with coordinates (a1, a2, a3)
Let b be a vector with coordinates (b1, b2, b3)
Cross Product for 3x3 Matrices:
× =
a × b = |a||b|sinθ, where θ is the angle between the two vectors and n is the
unit vector perpendicular to the plane created by a and b