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[几何] 解三角形

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chudengshuxue posted 2022-3-29 19:53 |Read mode

Last edited by hbghlyj 2025-3-19 17:42$\triangle A B C$ 为正三角形，$B D=2, D C=4 \sqrt{3}$
当 $\triangle A C D$ 面积最大时，求 $B C$ 的长。

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kuing posted 2022-3-29 20:09

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original poster chudengshuxue posted 2022-3-29 22:35

回复 2# kuing

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