[" A vector of to the vector "(i+2j)],[" and having magritude "3sqrt(5)" units is "]

A vector parallel to the vector (hati+2hatj) and having magnitude 3sqrt(5) units is

A vector perpendicular to the vector (i + 2j) and having magnitude 3 sqrt5 units is

A vector perpendicular to the vector (hat i+2hat j) and having magnitude 2sqrt(5) units is

The projection of the vector vec a=4i-3j+2k on the vector making equul angles (acute) with coordinate axes and having magnitude sqrt(3) is

The unit vector coplannar to the two vectors i-j and i+2j, and perpendicular to the first, is