AB是圆o的直径,AD是铉,∠DAB=22.5度,延长AB到点C,使得∠ACD=45度.(1)求证:CD是圆o的切线?(2...AB是圆o的直径,AD是铉,∠DAB=22.5度,延长AB到点C,使得∠ACD=45度.(1)求证:CD是圆o的切线?(2)弱AB的于2 根号2,求
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![AB是圆o的直径,AD是铉,∠DAB=22.5度,延长AB到点C,使得∠ACD=45度.(1)求证:CD是圆o的切线?(2...AB是圆o的直径,AD是铉,∠DAB=22.5度,延长AB到点C,使得∠ACD=45度.(1)求证:CD是圆o的切线?(2)弱AB的于2 根号2,求](/uploads/image/z/3719626-34-6.jpg?t=AB%E6%98%AF%E5%9C%86o%E7%9A%84%E7%9B%B4%E5%BE%84%2CAD%E6%98%AF%E9%93%89%2C%E2%88%A0DAB%3D22.5%E5%BA%A6%2C%E5%BB%B6%E9%95%BFAB%E5%88%B0%E7%82%B9C%2C%E4%BD%BF%E5%BE%97%E2%88%A0ACD%3D45%E5%BA%A6.%281%29%E6%B1%82%E8%AF%81%EF%BC%9ACD%E6%98%AF%E5%9C%86o%E7%9A%84%E5%88%87%E7%BA%BF%3F%282...AB%E6%98%AF%E5%9C%86o%E7%9A%84%E7%9B%B4%E5%BE%84%2CAD%E6%98%AF%E9%93%89%2C%E2%88%A0DAB%3D22.5%E5%BA%A6%2C%E5%BB%B6%E9%95%BFAB%E5%88%B0%E7%82%B9C%2C%E4%BD%BF%E5%BE%97%E2%88%A0ACD%3D45%E5%BA%A6.%281%29%E6%B1%82%E8%AF%81%EF%BC%9ACD%E6%98%AF%E5%9C%86o%E7%9A%84%E5%88%87%E7%BA%BF%3F%282%29%E5%BC%B1AB%E7%9A%84%E4%BA%8E2+%E6%A0%B9%E5%8F%B72%2C%E6%B1%82)
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