已知角
的终边经过点
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ba852d62d441c024416aead67680c53.png)
__ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77b85c89ac3058b2495f447fa10169b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ba852d62d441c024416aead67680c53.png)
更新时间:2022-02-15 15:30:02
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