Find a vector of magnitude which is perpendicular to both of the vectors and .

We know that cross product of two vectors gives us a vector which is perpendicular to both the vectors. If we can find an unit vector

perpendicular to the given vectors, we can easily get the answer by multiplying the unit vector.

Unit vectors perpendicular to the given vectors

Now,

∵ Unit vectors perpendicular to and

Vectors of magnitude which are perpendicular to and →