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[不等式] 三角不等式

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力工 Posted at 2024-11-18 14:05:48 |Read mode
在$\triangle ABC$中,分别求下列两式的最小值.
(1)$\cos A(4\sin B+3\sin C)$;
(2)$\sin A\sin B\sin C(\cot A+\cot B+\cot C)$.

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爪机专用 Posted at 2024-11-19 14:20:35
闲逛知乎,无意中就看到你这两题:zhuanlan.zhihu.com/p/7638292245

不过第二题链接里后面是三次方,1# 没有,不知道是否抄漏?
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