1 . 计算:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2b0b76ad7cf9e6f6f1b44593f3ead60.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2b0b76ad7cf9e6f6f1b44593f3ead60.png)
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2022-05-30更新
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834次组卷
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3卷引用:黑龙江哈尔滨工业大学附属中学校2021—2022学年高二下学期月考数学试题(理)
名校
2 . 在锐角
中,角
的对边分别为
,中线
,满足
.
(1)求
;
(2)若
,求
周长的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2269881be12e35199e0f95d8f4e7d4ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ead5bc1d7f6b96e992f9ca94348ab3c.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65397f11ea8af736f38debadf420c4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
您最近一年使用:0次