Question

Two vectors A and B are given by Ā = 3i - 2j and B = i +5j with respect to the same origin and
coordinate system. The vector Ċ in the same plane of A and B such that lCl= lA+Bl and whose
direction is perpendicular to A+B is​

Answer 1

2i+3j/√13

I think my answer may be wrong