AB是圆O的直径,CD是圆O的一条弦,且CD⊥AB于点E(1)求证:角BCO=∠D(2)若AB=4根号2,AE=2,求圆O的半径
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![AB是圆O的直径,CD是圆O的一条弦,且CD⊥AB于点E(1)求证:角BCO=∠D(2)若AB=4根号2,AE=2,求圆O的半径](/uploads/image/z/2455245-45-5.jpg?t=AB%E6%98%AF%E5%9C%86O%E7%9A%84%E7%9B%B4%E5%BE%84%2CCD%E6%98%AF%E5%9C%86O%E7%9A%84%E4%B8%80%E6%9D%A1%E5%BC%A6%2C%E4%B8%94CD%E2%8A%A5AB%E4%BA%8E%E7%82%B9E%EF%BC%881%EF%BC%89%E6%B1%82%E8%AF%81%EF%BC%9A%E8%A7%92BCO%3D%E2%88%A0D%EF%BC%882%EF%BC%89%E8%8B%A5AB%3D4%E6%A0%B9%E5%8F%B72%2CAE%3D2%2C%E6%B1%82%E5%9C%86O%E7%9A%84%E5%8D%8A%E5%BE%84)
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