2道填空题,只有2空,!1.已知△ABC是圆O的内接三角形,AD⊥BC于点D,AC=5,DC=3,AB=4根号2,则圆O的直径等于-----图马上传上来2.已知PA是圆O的切线,A为切点,PC与圆O相交于B和C,PB=2,BC=8则PA长等于----图可能要
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![2道填空题,只有2空,!1.已知△ABC是圆O的内接三角形,AD⊥BC于点D,AC=5,DC=3,AB=4根号2,则圆O的直径等于-----图马上传上来2.已知PA是圆O的切线,A为切点,PC与圆O相交于B和C,PB=2,BC=8则PA长等于----图可能要](/uploads/image/z/10248480-0-0.jpg?t=2%E9%81%93%E5%A1%AB%E7%A9%BA%E9%A2%98%2C%E5%8F%AA%E6%9C%892%E7%A9%BA%2C%211.%E5%B7%B2%E7%9F%A5%E2%96%B3ABC%E6%98%AF%E5%9C%86O%E7%9A%84%E5%86%85%E6%8E%A5%E4%B8%89%E8%A7%92%E5%BD%A2%2CAD%E2%8A%A5BC%E4%BA%8E%E7%82%B9D%2CAC%3D5%2CDC%3D3%2CAB%3D4%E6%A0%B9%E5%8F%B72%2C%E5%88%99%E5%9C%86O%E7%9A%84%E7%9B%B4%E5%BE%84%E7%AD%89%E4%BA%8E-----%E5%9B%BE%E9%A9%AC%E4%B8%8A%E4%BC%A0%E4%B8%8A%E6%9D%A52.%E5%B7%B2%E7%9F%A5PA%E6%98%AF%E5%9C%86O%E7%9A%84%E5%88%87%E7%BA%BF%2CA%E4%B8%BA%E5%88%87%E7%82%B9%2CPC%E4%B8%8E%E5%9C%86O%E7%9B%B8%E4%BA%A4%E4%BA%8EB%E5%92%8CC%2CPB%3D2%2CBC%3D8%E5%88%99PA%E9%95%BF%E7%AD%89%E4%BA%8E----%E5%9B%BE%E5%8F%AF%E8%83%BD%E8%A6%81)
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