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[几何] 高与边,求最值(解三角形)

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力工 Posted at 2025-4-1 17:11:35 |Read mode
建系好烦。
(青岛)已知$\triangle ABC$的内角$A,B,C$的对边为$a,b,c,BC$边上的高为$h$,若$h=b+c-a$,求$\sin A$的最小值。

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kuing Posted at 2025-4-1 17:27:05

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谢谢k大佬,学习了,这个题怎么想到内切圆的,还有点那个迷糊。  Posted at 2025-4-2 08:34

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