在
中已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e3004b34defa42e640b5739bae390dc.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2101c131552fbebd79c820d7a2ffe371.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e3004b34defa42e640b5739bae390dc.png)
更新时间:2022-11-09 11:02:02
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解题方法
【推荐1】已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a3da7b68545fb683d596a3002f9918c.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b55ac24abf8a7eafedb7e6241a57c65c.png)
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名校
【推荐2】已知钝角
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