Find a unit vector perpendicular to each of the vectors `veca+vecb` and `veca-vecb`, where `veca=3hati+2hatj+2hatk` and `vecb=hati+2hatj-2hatk`.

Find a unit vector perpendicular to each of vectors (veca + vecb) and ( veca - vecb) where veca = hati+ hatj + hatk and vecb = hati + 2hatj + 3hatk .

Find a unit vector perpendicular to both veca and vecb .

Find a vector perpendicular to both veca and vecb .

Find | veca xx vecb| where veca = 3 hati - hatj + 2 hatk and vecb = 2 hat i + 3 hatj - 4hatk.

Find the unit vector in the direction of the vector veca+vecb where veca =2hati - hatj +2 hatk and vecb = - hatj +hatj- hatk

Find a unit vector which is perpendicular to both the vectors 2hati + hatj - hatk and 3hati + 4hatj - hatk .

What is the angle between vectors veca = hati - hatj + hatk and vecb = hati + hatj - hatk ?

Write a unit vector in direction of the sum of vectors veca = 2hati - hatj+ 2hatk and vecb= - hati +hatj+3 hatk .