如图,在直角坐标系中,已知两点O(0,0),A(2,0),点B在第一象限且△OAB为正三角形,△OAB的外接圆交y轴的正半轴于点C,过点C的圆的切线交x轴与点D.求B,C两点的坐标求直线CD的函数解析式设E,F分别是线
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![如图,在直角坐标系中,已知两点O(0,0),A(2,0),点B在第一象限且△OAB为正三角形,△OAB的外接圆交y轴的正半轴于点C,过点C的圆的切线交x轴与点D.求B,C两点的坐标求直线CD的函数解析式设E,F分别是线](/uploads/image/z/11955278-38-8.jpg?t=%E5%A6%82%E5%9B%BE%2C%E5%9C%A8%E7%9B%B4%E8%A7%92%E5%9D%90%E6%A0%87%E7%B3%BB%E4%B8%AD%2C%E5%B7%B2%E7%9F%A5%E4%B8%A4%E7%82%B9O%280%2C0%29%2CA%282%2C0%29%2C%E7%82%B9B%E5%9C%A8%E7%AC%AC%E4%B8%80%E8%B1%A1%E9%99%90%E4%B8%94%E2%96%B3OAB%E4%B8%BA%E6%AD%A3%E4%B8%89%E8%A7%92%E5%BD%A2%2C%E2%96%B3OAB%E7%9A%84%E5%A4%96%E6%8E%A5%E5%9C%86%E4%BA%A4y%E8%BD%B4%E7%9A%84%E6%AD%A3%E5%8D%8A%E8%BD%B4%E4%BA%8E%E7%82%B9C%2C%E8%BF%87%E7%82%B9C%E7%9A%84%E5%9C%86%E7%9A%84%E5%88%87%E7%BA%BF%E4%BA%A4x%E8%BD%B4%E4%B8%8E%E7%82%B9D.%E6%B1%82B%2CC%E4%B8%A4%E7%82%B9%E7%9A%84%E5%9D%90%E6%A0%87%E6%B1%82%E7%9B%B4%E7%BA%BFCD%E7%9A%84%E5%87%BD%E6%95%B0%E8%A7%A3%E6%9E%90%E5%BC%8F%E8%AE%BEE%2CF%E5%88%86%E5%88%AB%E6%98%AF%E7%BA%BF)
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