The triple vector product
, which can also be written in the form
, is one way of multiplying the three vectors
. The result is a vector lying in the same plane as
. Here the vector triple product is shown in red, and the vector
is also shown in magenta. The blue plane is the plane determined by
, to which the magenta vector is perpendicular. You can choose to see the unit vector in the direction of
with "direction only".