已知
,
是第三象限角.
(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf68e5b34c8a3dba8433c2f54e96db39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc9a7b05d296386e94b87cf59d47bd9f.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a541acd0e69306bfb2f40c507556ee9a.png)
更新时间:2024-01-10 22:51:15
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