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纯粹的公式题:(1)、a*b*c=4*R*s(由面积公式及正弦定理得到)。(2)、海伦公式:s=sqrt(p*(p-a)*(p-b)*(p-c))、p=(a+b+c)/2

Posted by 19910517 at 2009-08-19 11:38:12 on Problem 2242


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