在
中,角
的对边分别是
,且
,则
等于
![](https://img.xkw.com/dksih/QBM/2014/4/30/1571698515689472/1571698521464832/STEM/9f61e69fe05c45678ed9cea9c015875c.png)
![](https://img.xkw.com/dksih/QBM/2014/4/30/1571698515689472/1571698521464832/STEM/db939c7bc0324095bcffa842a4e70543.png)
![](https://img.xkw.com/dksih/QBM/2014/4/30/1571698515689472/1571698521464832/STEM/1ac9e71050524b25b837c2f7ddc41a04.png)
![](https://img.xkw.com/dksih/QBM/2014/4/30/1571698515689472/1571698521464832/STEM/6fdfcb3a64e94cd4a701515efb8f9140.png)
![](https://img.xkw.com/dksih/QBM/2014/4/30/1571698515689472/1571698521464832/STEM/7871f0a74c0a4f68bd045a2d41de2ba0.png)
A.![]() | B.![]() | C.![]() | D.![]() |
2014·上海徐汇·一模 查看更多[2]
更新时间:2016-12-02 23:30:55
|
【知识点】 正弦定理边角互化的应用解读
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适中
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【推荐1】在
中,角
,
,
的对边分别为
,
,
,若
,
,则
面积的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ad422f46c6229d6c0b2df9352c4f9de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c807609a6a4a9008e66723409f23ef8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.1 | B.![]() | C.2 | D.![]() |
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单选题
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适中
(0.65)
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【推荐2】钝角
的内角A,B,C的对边分别是a,b,c,已知
,
,且
,则
的周长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da8607bde1fa6cde631a46e921d959a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a99233088a51fb31fef6de84488f7ea8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.9 | B.![]() | C.6 | D.![]() |
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