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【简答题】
已知一圆的圆心为(-2,0),圆的一条直径所在直线的方程为4x-3y+8=0, P(2,-3)为圆外一点,求: (1)点P到这条直径的距离; (2)点P到圆心的距离。
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参考答案:
举一反三
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