Dot Product & Cross Product Of Two Vectors

The dot product (also called scalar product) of two vectors is defined as
  . = ab cosθ
where a and b are the magnitudes of  and  respectively and θ is the angle between them.


The cross product (also called vector product) of two vectors  and , denoted by  *  and is itself a vector. The magnitude of this vector is
 |  *  |= ab sinθ