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[几何] 高与边，求最值(解三角形）

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力工 posted 2025-4-1 17:11 |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。

解三角形, 最值

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kuing posted 2025-4-1 17:27

zhihu.com/question/594324123/answer/2974871823

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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 2025-4-2 08:34

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