如图,AB是圆O的直径,弦DE垂直平分半径OA,C为垂足,弦DF与半径OB相交于点P···如图,AB是圆O的直径,弦DE垂直平分半径OA,C为垂足,弦DF与半径OB相交于点P,连接EF、EO,若DE=2倍根号3,∠DPA=45°求EF的长·
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![如图,AB是圆O的直径,弦DE垂直平分半径OA,C为垂足,弦DF与半径OB相交于点P···如图,AB是圆O的直径,弦DE垂直平分半径OA,C为垂足,弦DF与半径OB相交于点P,连接EF、EO,若DE=2倍根号3,∠DPA=45°求EF的长·](/uploads/image/z/3719726-62-6.jpg?t=%E5%A6%82%E5%9B%BE%2CAB%E6%98%AF%E5%9C%86O%E7%9A%84%E7%9B%B4%E5%BE%84%2C%E5%BC%A6DE%E5%9E%82%E7%9B%B4%E5%B9%B3%E5%88%86%E5%8D%8A%E5%BE%84OA%2CC%E4%B8%BA%E5%9E%82%E8%B6%B3%2C%E5%BC%A6DF%E4%B8%8E%E5%8D%8A%E5%BE%84OB%E7%9B%B8%E4%BA%A4%E4%BA%8E%E7%82%B9P%C2%B7%C2%B7%C2%B7%E5%A6%82%E5%9B%BE%2CAB%E6%98%AF%E5%9C%86O%E7%9A%84%E7%9B%B4%E5%BE%84%2C%E5%BC%A6DE%E5%9E%82%E7%9B%B4%E5%B9%B3%E5%88%86%E5%8D%8A%E5%BE%84OA%2CC%E4%B8%BA%E5%9E%82%E8%B6%B3%2C%E5%BC%A6DF%E4%B8%8E%E5%8D%8A%E5%BE%84OB%E7%9B%B8%E4%BA%A4%E4%BA%8E%E7%82%B9P%2C%E8%BF%9E%E6%8E%A5EF%E3%80%81EO%2C%E8%8B%A5DE%3D2%E5%80%8D%E6%A0%B9%E5%8F%B73%2C%E2%88%A0DPA%3D45%C2%B0%E6%B1%82EF%E7%9A%84%E9%95%BF%C2%B7)
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