Let the vectors be \(\vec a\) and \(\vec b\), such that
We need to find a vector perpendicular to both the vectors \(\vec a\) and \(\vec b\).
Any vector perpendicular to both \(\vec a\) and \(\vec b\) can be given as,
As we know, a unit vector in a normed vector space is a vector (often a spatial vector) of length 1.
So,
A vector of magnitude 6 in the direction of \(\vec r\) is given by,