已知锐角
的三个内角的余弦值分别等于钝角
的三个内角的正弦值,其中
,若
,则
的最大值为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62c3135fa20c32d04a270750f77c1f2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/403590d719951bd6133479f4e52041bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5c467a409b105c11bb2c5cc0c4cc01b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce78bf3431264eb413f8078e7365ad57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dee16a5cd06d9dccb03930bb1ce40b4.png)
更新时间:2018-03-08 16:58:31
|
【知识点】 正弦定理边角互化的应用解读
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【推荐2】在
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