AP and TS EAMCET Engineering Model Paper 12

In the Cartesian plane. 0 is the origin of the coordinate axes. A person starts at 0 and walks a distance of 3 units in the NORTH- EAST direction and reaches the point P. From P he walks 4 units distance parallel to NORTH WEST direction and reaches the point Q, then the vector OQ in terms i and j (∠XOP=45°) is