在锐角ABC中,已知![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fe7d32b89bb5d75e68c21af747364df.png)
,试判断
的形状,并给出证明.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fe7d32b89bb5d75e68c21af747364df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b9aa40837797d4b781bef7af6e9e7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
2019高三·全国·竞赛 查看更多[1]
更新时间:2018-12-27 11:05:35
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【推荐2】在
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【推荐1】设a、b、c、d、e为正实数,且
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【推荐1】求最大实数
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【推荐2】求出所有满足下面要求的不小于1的实数
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