已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad7b832b7f8735957efb5061c4303371.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d59142ab797807e560fe8adf63e6ecb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad7b832b7f8735957efb5061c4303371.png)
更新时间:2019-09-23 20:58:05
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【知识点】 正、余弦齐次式的计算解读
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