如图,△ABC内接于园O,且角B=60°,过点C作圆的切线l与直径AD的延长线
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![如图,△ABC内接于园O,且角B=60°,过点C作圆的切线l与直径AD的延长线](/uploads/image/f/3561574-22-4.jpg?t=%E5%A6%82%E5%9B%BE%2C%E2%96%B3ABC%E5%86%85%E6%8E%A5%E4%BA%8E%E5%9B%ADO%2C%E4%B8%94%E8%A7%92B%3D60%C2%B0%2C%E8%BF%87%E7%82%B9C%E4%BD%9C%E5%9C%86%E7%9A%84%E5%88%87%E7%BA%BFl%E4%B8%8E%E7%9B%B4%E5%BE%84AD%E7%9A%84%E5%BB%B6%E9%95%BF%E7%BA%BF)
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