如图,在平面直角坐标系中,已知\(\triangle ABC\)三个顶点的坐标分别是\(A(2,2)\),\(B(4,0)\),\(C(4,-4)\).
\((1)\)请在图中,画出\(\triangle ABC\)向左平移\(6\)个单位长度后得到的\(\triangle A_{1}B_{1}C_{1}\);
\((2)\)以点\(O\)为位似中心,将\(\triangle ABC\)缩小为原来的\( \dfrac {1}{2}\),得到\(\triangle A_{2}B_{2}C_{2}\),请在图中\(y\)轴右侧,画出\(\triangle A_{2}B_{2}C_{2}\),并求出\(∠A_{2}B_{2}C_{2}\)的正弦值.