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)
您最近一年使用:0次
2024-02-27更新
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514次组卷
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5卷引用:山东省北镇中学2023-2024学年高一下学期开学考试数学试题
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)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(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))
2 . 在平面四边形ABCD中,
,AD=CD=2,AB=1,
,沿AC将
折起,使得点B到达点
的位置,得到三棱锥
.则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19fc9f894312e55c87a0d6737080e233.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3953cec61ac602ce5eb59b7912352179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f04fd30d1c73fde67ff18e19dd26a420.png)
A.三棱锥![]() ![]() |
B.![]() |
C.直线AC与![]() ![]() |
D.对任意点![]() ![]() |
您最近一年使用:0次
名校
解题方法
3 . 如图所示,已知
是半径为
,中心角为
的扇形,
为弧
上一动点,四边形
是矩形,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/9/e241604e-de63-4495-ace0-a6073af048ae.png?resizew=176)
(1)求矩形
的面积
的最大值及取得最大值时的
值;
(2)在
中,
,
,其面积
,求
的周长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3711e331195e55e1c0133b0286d61a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7ffe8515ff6183c1c7775dc6f94bdb8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0c44512cb86bcf48c6d21357f45b533.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43ac79e422ba4876949f0514c44539b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1b2aa8aa762ef59e8ba2f91289d1248.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/9/e241604e-de63-4495-ace0-a6073af048ae.png?resizew=176)
(1)求矩形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43ac79e422ba4876949f0514c44539b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3edf5b17028263f18c2ab6117cae62ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6de1d395e6c48c0676a1488a299479d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a72335ff513c24f55115bd073ab7c9a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
您最近一年使用:0次
2022-07-07更新
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787次组卷
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4卷引用:山东省聊城市第二中学2023-2024学年高二上学期开学考试数学试题