高中数学圆与圆的位置关系解答题,求步骤!如图,C为圆O:x2+y2=1上一点,以圆C为圆心作一元与x轴相切于点D,与圆O交于点E,F(1)求直线EF的方程(2)求证:EF平分CD
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![高中数学圆与圆的位置关系解答题,求步骤!如图,C为圆O:x2+y2=1上一点,以圆C为圆心作一元与x轴相切于点D,与圆O交于点E,F(1)求直线EF的方程(2)求证:EF平分CD](/uploads/image/z/5938871-23-1.jpg?t=%E9%AB%98%E4%B8%AD%E6%95%B0%E5%AD%A6%E5%9C%86%E4%B8%8E%E5%9C%86%E7%9A%84%E4%BD%8D%E7%BD%AE%E5%85%B3%E7%B3%BB%E8%A7%A3%E7%AD%94%E9%A2%98%2C%E6%B1%82%E6%AD%A5%E9%AA%A4%21%E5%A6%82%E5%9B%BE%2CC%E4%B8%BA%E5%9C%86O%3Ax2%2By2%3D1%E4%B8%8A%E4%B8%80%E7%82%B9%2C%E4%BB%A5%E5%9C%86C%E4%B8%BA%E5%9C%86%E5%BF%83%E4%BD%9C%E4%B8%80%E5%85%83%E4%B8%8Ex%E8%BD%B4%E7%9B%B8%E5%88%87%E4%BA%8E%E7%82%B9D%2C%E4%B8%8E%E5%9C%86O%E4%BA%A4%E4%BA%8E%E7%82%B9E%2CF%281%29%E6%B1%82%E7%9B%B4%E7%BA%BFEF%E7%9A%84%E6%96%B9%E7%A8%8B%EF%BC%882%EF%BC%89%E6%B1%82%E8%AF%81%EF%BC%9AEF%E5%B9%B3%E5%88%86CD)
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