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sjx

于 2015-05-09 发布 文件大小:8KB
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   一般地,把三角形的三个角A,B,C和它们的对边a,b,c叫做三角形的元素。已知三角形的几个元素求其他元素的过程叫做解三角形。解三角形,常用到正弦定理和余弦定理和面积公式等。正弦定理a/sinA=b/sinB=c/sinC=2R(2R在同一个三角形中是恒(The Triangle software, wrote)

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