如图,AB是圆O的直径 C为圆O上一点,AD和过C点的切线相交于点D如图,AB是⊙O的直径,C为⊙O上一点,AD和过C点的切线相交于点D,和⊙O相交与E,如果AC平分∠DAB(1)试证明AD⊥CD(2)若AB=10,AD=8,求AC
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![如图,AB是圆O的直径 C为圆O上一点,AD和过C点的切线相交于点D如图,AB是⊙O的直径,C为⊙O上一点,AD和过C点的切线相交于点D,和⊙O相交与E,如果AC平分∠DAB(1)试证明AD⊥CD(2)若AB=10,AD=8,求AC](/uploads/image/z/4536004-4-4.jpg?t=%E5%A6%82%E5%9B%BE%2CAB%E6%98%AF%E5%9C%86O%E7%9A%84%E7%9B%B4%E5%BE%84+C%E4%B8%BA%E5%9C%86O%E4%B8%8A%E4%B8%80%E7%82%B9%2CAD%E5%92%8C%E8%BF%87C%E7%82%B9%E7%9A%84%E5%88%87%E7%BA%BF%E7%9B%B8%E4%BA%A4%E4%BA%8E%E7%82%B9D%E5%A6%82%E5%9B%BE%2CAB%E6%98%AF%E2%8A%99O%E7%9A%84%E7%9B%B4%E5%BE%84%2CC%E4%B8%BA%E2%8A%99O%E4%B8%8A%E4%B8%80%E7%82%B9%2CAD%E5%92%8C%E8%BF%87C%E7%82%B9%E7%9A%84%E5%88%87%E7%BA%BF%E7%9B%B8%E4%BA%A4%E4%BA%8E%E7%82%B9D%2C%E5%92%8C%E2%8A%99O%E7%9B%B8%E4%BA%A4%E4%B8%8EE%2C%E5%A6%82%E6%9E%9CAC%E5%B9%B3%E5%88%86%E2%88%A0DAB%EF%BC%881%EF%BC%89%E8%AF%95%E8%AF%81%E6%98%8EAD%E2%8A%A5CD%EF%BC%882%EF%BC%89%E8%8B%A5AB%EF%BC%9D10%2CAD%EF%BC%9D8%2C%E6%B1%82AC)
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