已知
,则
=________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd1a5ffff67e72085f83cd1c82d38576.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c5a05a11f731194a845e68a0479ce4.png)
更新时间:2021-01-09 21:50:43
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较易
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解题方法
【推荐2】若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8640aafe54018ba013295b68e2946a7a.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9082689a168d98a4019ef9cd87a1cb12.png)
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填空题-双空题
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较易
(0.85)
名校
解题方法
【推荐1】已知
,
为锐角,
,
,则
的值为__________ ;
的值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
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您最近一年使用:0次
填空题-单空题
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(0.85)
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【推荐2】设
为锐角,若
,则
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc2f96fd04e52b79e7ffe3820470614e.png)
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您最近一年使用:0次