已知定点\(A(-1,0)\)\(,B(2,0)\),圆\(C\):\({x}^{2}+{y}^{2}-2x-2 \sqrt{3}y+3=0 \)
\((1)\)过点\(B\)向圆\(C\)引切线\(l\),求切线\(l\)的方程;
\((2)\)过点\(A\)作直线\(l\)\(1\)交圆\(C\)于\(P\),\(Q\)两点,且\(\overrightarrow{AP}= \overrightarrow{PQ} \),求直线\(l_{1}\)的斜率\(k\);
\((3)\)定点\(M\),\(N\)在直线\(l\)\(2\)\(:x=1\)上,对于圆\(C\)上任意一点\(R\)满足\(RN= \sqrt{3}RM \),试求\(M\),\(N\)两点的坐标.