20-21高一下·上海·期末
1 . 若
的三个内角
满足
,试判断
的形状.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bef54b681bd6123f5cfc3e28160f4a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
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2 . 在锐角
中,
,
,
分别为角
,
,
所对的边,且满足
,则
的取值范围是__ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8214b98c5dc14210f42f251c45f70a7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a24a8f5e8fb89381f8add6549170345.png)
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2020-08-30更新
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351次组卷
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4卷引用:福建省莆田市2020-2021学年高二上学期数学期末考试数学试题
福建省莆田市2020-2021学年高二上学期数学期末考试数学试题江苏省泰州市2019-2020学年高一下学期期末(重考卷)数学试题(已下线)第01章解三角形(B卷提升篇)-2020-2021学年高二数学必修五同步单元AB卷(人教A版,浙江专用)四川省内江市第六中学2020-2021学年高二上学期开学考试数学(理)试题
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3 . 已知
.
(1)求
;
(2)若
,求
;
(3)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec472a86c2e8e13ff72adb50f375fd75.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40e9ef817fd355fca7a0f96bed0800bb.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1672d0eecc9c890906bd5c2a2c9276cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04f9137ced401ef63821931253b9a59d.png)
(3)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a73f84d6ec94f5444042336ecb8e6b15.png)
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