名校
解题方法
1 . 从下面两个条件中任选一个补全题干,并回答相关问题.已知在三角形
中,
条件①:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f1a91385acb075a714f709653e3bddb.png)
条件②:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6e61bce18b0e097c5e0d40a3df50cde.png)
(1)求
;
(2)若该三角形是锐角三角形,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
条件①:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f1a91385acb075a714f709653e3bddb.png)
条件②:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6e61bce18b0e097c5e0d40a3df50cde.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
(2)若该三角形是锐角三角形,求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f955c0125cd0724781ddbc8650def052.png)
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5卷引用:重庆市沙坪坝区部分学校2023-2024学年高一下学期4月阶段检测数学试题
重庆市沙坪坝区部分学校2023-2024学年高一下学期4月阶段检测数学试题山东省北镇中学2023-2024学年高一下学期开学考试数学试题(已下线)6.4.3 第2课时 正弦定理【第三练】“上好三节课,做好三套题“高中数学素养晋级之路(已下线)专题突破:解三角形中的最值与范围问题-同步题型分类归纳讲与练(人教A版2019必修第二册)(已下线)专题06 解三角形综合大题归类(2) -期末考点大串讲(苏教版(2019))
名校
2 .
的内角
,
,
所对的边分别为
,
,
.已知
,且
,有下列结论:
①
;
②
;
③
,
时,
的面积为
;
④当
时,
为钝角三角形.
其中正确的是__________ .(填写所有正确结论的编号)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.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/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/90929097f9e4ec1b521a224aaa485d70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/585d85a95ae83e6b7e4556eb63f3eeb6.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18dccba7bc301e4913b1a4856afae466.png)
②
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d697d914ec99d6edb5a6ab7efe1c5686.png)
③
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a15a13b4190ac3d5feaee27a4c97b21b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1be706891a18cdd3ae6d514d34990b3e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/530be0354ac54e554421d9c82e5070e4.png)
④当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e58303bdbbdf9b78308135ee1ed413d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
其中正确的是
您最近一年使用:0次
2017-12-05更新
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6卷引用:重庆市第一中学2019-2020学年高三下学期3月月考数学(文)试题