解答题-问答题 适中0.65 引用1 组卷733
已知函数![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990034972672/1571990040797184/STEM/7613c4986ae04a6e9e1d5f2a7d3a183d.png)
.
(1)求
的单调递增区间;
(2)在锐角三角形
中,a、b、c分别是角A、B、C的对边,若
,
,
的面积为
,求
的值.
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990034972672/1571990040797184/STEM/7613c4986ae04a6e9e1d5f2a7d3a183d.png)
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990034972672/1571990040797184/STEM/c3e6271a1f304ea3a03d445e00d6a23b.png)
(1)求
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990034972672/1571990040797184/STEM/a732349a10b3475399ec3c7dffd60024.png)
(2)在锐角三角形
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990034972672/1571990040797184/STEM/e398aefebda74dd08a33d136a59d583d.png)
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990034972672/1571990040797184/STEM/83ec4bdfbf2c4bc3a850d662763f5a24.png)
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990034972672/1571990040797184/STEM/4b7083bf27124aa1b14f388f1eb5a0b8.png)
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990034972672/1571990040797184/STEM/193b20ce02ca45e3ae78cece5629df72.png)
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990034972672/1571990040797184/STEM/f93b6e2cc85546cd89e706a285826109.png)
![](https://img.xkw.com/dksih/QBM/2015/3/4/1571990034972672/1571990040797184/STEM/9f72c3d2dc2944daad4347619115edeb.png)
2015·贵州黔东南·三模
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