.在以\(O\)为原点的平面直角坐标系中,点\(A\)\((4,\)\(-\)\(3)\)为\(\triangle \)\(OAB\)的直角顶点,已知\(|AB|=\)\(2\)\(|OA|\),且点\(B\)的纵坐标大于\(0\).
\((1)\)求\( \overset{→}{AB} \)的坐标\(;\)
\((2)\)求圆\(x\)\({\,\!}^{2}\)\(-\)\(6\)\(x+y\)\({\,\!}^{2}\)\(+\)\(2\)\(y=\)\(0\)关于直线\(OB\)对称的圆的方程.