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[几何] 如何计算四面体三组对棱所成角的算术平均值

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lihpb posted 2024-6-29 18:48 |Read mode

假设四面体6条棱和6个二面角而知，设三组对棱所成角的算术平均值为x
我记得csc x是有个公式的，有没有人会这个公式

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2025-6-8 15:50 GMT+8

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