3d vector cross product calculator
according to the definition of vector cross product, (→a)x(→b)=(→c)
vector c=vector a×vector b=
|i j k |
|a1 a2 a3|
|b1 b2 b3|
=(a2b3-a3b2,a3b1-a1b3,a1b2-a2b1)
(i, j, k are unit vectors of three mutually perpendicular coordinate axes in space respectively)