如图ABCD是边长为a的正方形,以D为圆心,DA为半径的圆弧与以BC为交于点P,延长AP交BC于点N,则 = .如图ABCD是边长为a的正方形,以D为圆心,DA为半径的圆弧与以BC为直径的半圆交于另一点P,延长AP交BC于
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![如图ABCD是边长为a的正方形,以D为圆心,DA为半径的圆弧与以BC为交于点P,延长AP交BC于点N,则 = .如图ABCD是边长为a的正方形,以D为圆心,DA为半径的圆弧与以BC为直径的半圆交于另一点P,延长AP交BC于](/uploads/image/z/12086543-47-3.jpg?t=%E5%A6%82%E5%9B%BEABCD%E6%98%AF%E8%BE%B9%E9%95%BF%E4%B8%BAa%E7%9A%84%E6%AD%A3%E6%96%B9%E5%BD%A2%2C%E4%BB%A5D%E4%B8%BA%E5%9C%86%E5%BF%83%2CDA%E4%B8%BA%E5%8D%8A%E5%BE%84%E7%9A%84%E5%9C%86%E5%BC%A7%E4%B8%8E%E4%BB%A5BC%E4%B8%BA%E4%BA%A4%E4%BA%8E%E7%82%B9P%2C%E5%BB%B6%E9%95%BFAP%E4%BA%A4BC%E4%BA%8E%E7%82%B9N%2C%E5%88%99+%3D+.%E5%A6%82%E5%9B%BEABCD%E6%98%AF%E8%BE%B9%E9%95%BF%E4%B8%BAa%E7%9A%84%E6%AD%A3%E6%96%B9%E5%BD%A2%2C%E4%BB%A5D%E4%B8%BA%E5%9C%86%E5%BF%83%2CDA%E4%B8%BA%E5%8D%8A%E5%BE%84%E7%9A%84%E5%9C%86%E5%BC%A7%E4%B8%8E%E4%BB%A5BC%E4%B8%BA%E7%9B%B4%E5%BE%84%E7%9A%84%E5%8D%8A%E5%9C%86%E4%BA%A4%E4%BA%8E%E5%8F%A6%E4%B8%80%E7%82%B9P%2C%E5%BB%B6%E9%95%BFAP%E4%BA%A4BC%E4%BA%8E)
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