已知
,
均为锐角,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38dd8aad9cfb5e1fe2a45d80923f1571.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3aaebdefc548fa30d3cfde87a1637314.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95c98ce1bd8a5ffe3e18b4033d4ade5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38dd8aad9cfb5e1fe2a45d80923f1571.png)
更新时间:2021-05-10 19:13:14
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【推荐1】已知
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____________ .
![](https://img.xkw.com/dksih/QBM/2014/2/12/1571506649980928/1571506654871552/STEM/c1f693a675234233a0453843f5662743.png?resizew=14)
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![](https://img.xkw.com/dksih/QBM/2014/2/12/1571506649980928/1571506654871552/STEM/b7daaf191ebf4d3fa6377a864abbcb51.png?resizew=90)
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填空题-单空题
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容易
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名校
解题方法
【推荐2】已知
,
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___________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b222ecd5334870a19c05e3a89349bff3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fd9f445fff387717ae6a5adcffaf37d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85527d190d4e1d6bac4145d1c716e65e.png)
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