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[几何] 已知三半角求角度

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乌贼 Posted at 2022-6-16 01:48:18 |Read mode

转自2666666.blog.163.com/blog/static/6679636420094231064505/

如图

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走走看看 Posted at 2025-2-7 21:36:58

这道题的链接打不开了。

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lemondian Posted at 2025-2-7 22:06:12

角元塞瓦定理应该可以

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