辅助角公式:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2133d73ba62f57345d09e320068ad0c.png)
_________________ 其中![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e304cf018473bb54edb166fcd6502b.png)
________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2133d73ba62f57345d09e320068ad0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e304cf018473bb54edb166fcd6502b.png)
更新时间:2023-04-28 00:19:30
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