已知
,
是第三象限角.
(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d33658e09092e727b0035825036fc8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0a39ee003ce154b19561409afdddb7c.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3c7b3a80aa5478d49cab88ed819ea64.png)
更新时间:2023-08-12 15:18:53
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