在
中,
,
,
,则边
的长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e240a6378adf6d23ebf9cc710c9bd6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/784d093b48df0ba4ae15ea1368fe85e8.png)
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2022高二上·安徽合肥·学业考试 查看更多[3]
安徽省合肥世界外国语学校2022-2023学年高二上学期第一次合格性考试模拟数学试题(已下线)第13讲 余弦定理(已下线)6.4.3第1课时余弦定理(精讲)-【精讲精练】2022-2023学年高一数学下学期同步精讲精练(人教A版2019必修第二册)
更新时间:2022-12-08 10:27:04
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【推荐1】设
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