" I."1." Find unit vector parallel to the "XOY" - plane and perpendicular to the vector "4i-3j+k" ."

Find unit vector parallel to the XOY-plane and perpendicular to the vector 4bar(i) - 3bar(j) + bar(k) .

A unit vector parallel to xy -plane and perpendicular to the vector 4hat i-3hat j+hat k is

Given that i-j,i-2j are two vectors.Find a unit vector coplanar with these vectors and, perpendicular to the first vector i-j. Find also the unit vector which is perpendicular to the plane of the two given vectors.

The unit vectors parallel to i-3j-5k is

The unit vector parallel to the internal angle bisector of the vectors 2i+3i+6k and 2i-3j-6k is