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解题方法
1 . 已知
为第三象限角,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25713ff3297d338fa333c0412a25f328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db73deb6fa502e49e3c873ef076fbc32.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25713ff3297d338fa333c0412a25f328.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
A.![]() | B.![]() | C.![]() | D.![]() |