[问答题]
A circle of radius 3 and centre (0,3) is drawn on an Argand diagram.rq btgrr () n/y v;0bbj)6ua(f Th6cgt mh /pj1e4e tangent to the circhgp6 1/ mjetc4le from the point B(0,9) meets the circle at the point A as shown. Let $w=\overrightarrow{\mathrm{OA}}$
