The principle of vector intersection formula is that the direction of vector C is perpendicular to the plane where A and B are located, and the direction should be judged by "right hand rule". First, use the four fingers of the right hand to indicate the direction of vector A, then swing the fingers to the direction of vector B, and the direction pointed by the thumb is the direction of vector C.
Cross product mathematics is also called:
Outer product and cross product, called vector product and cross product in physics, are binary operations of vectors in vector space. Unlike dot product, its operation result is vector instead of scalar. The cross product of two vectors is perpendicular to the sum of two vectors. It is also widely used, usually in physical optics and computer graphics.