(1)已知
,
,求
的值;
(2)若锐角
满足
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8bb29cd95b4a0773e1312155daf1b73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b06f37bd322af6e273ceb66bac49a716.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7d8565c2e8ea85e18585c963a987697.png)
(2)若锐角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92fcb862b8917b776949eceac5f7cdf4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c70a3137aed25bba80bbab3f135d865c.png)
更新时间:2023-12-29 17:03:49
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