如图,已知AB是⊙O的直径,∠AOE=60°,C是AB延长线上一点,CE交⊙O于点D,且CD=OB,则∠C等于
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![如图,已知AB是⊙O的直径,∠AOE=60°,C是AB延长线上一点,CE交⊙O于点D,且CD=OB,则∠C等于](/uploads/image/z/3939605-53-5.jpg?t=%E5%A6%82%E5%9B%BE%2C%E5%B7%B2%E7%9F%A5AB%E6%98%AF%E2%8A%99O%E7%9A%84%E7%9B%B4%E5%BE%84%2C%E2%88%A0AOE%3D60%C2%B0%2CC%E6%98%AFAB%E5%BB%B6%E9%95%BF%E7%BA%BF%E4%B8%8A%E4%B8%80%E7%82%B9%2CCE%E4%BA%A4%E2%8A%99O%E4%BA%8E%E7%82%B9D%2C%E4%B8%94CD%3DOB%2C%E5%88%99%E2%88%A0C%E7%AD%89%E4%BA%8E)
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