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射影定理
释义
射影定理
shè yǐng dìng lǐ
关于三角形的任意一边等于其他两边在这边上射影的和的定理。即a=bcosc+ccosb,b=acosc+ccosa,c=acosb+bcosa。
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Edmund Charles Edouard Genet
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Edmund Halley
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更新时间:2025/2/24 16:07:03