解题方法
1 . 在梯形
中,
,且
,沿对角线
将三角形
折起,所得四面体
外接球的表面积为
,则异面直线
与
所成角为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b02c58b924146d5706bced8d525098f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39d1d44522f7a31073fbf02b696e7005.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63850c0f9ba71c7d6f20903707b2d98e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
2 . 如图,在长方体
中,
,
,点
在矩形
内运动(包括边界),
,
分别为
的中点,若
平面
,当
取得最小值时,
的余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5213d6ac74fb6044cab6927a3d2acaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/334bd1a151c0a42ca813cb6b839ce45c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24579dca7ff1542ae019fc36110dddbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8ebb01953c4ac7afb87497b9454579e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0ff310aabd2282b539537ebed3f788.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3af6c6dd9b34c7b4a1d1cff73f7d140.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-05-04更新
|
746次组卷
|
3卷引用:6.4.2平面与平面平行-【帮课堂】(北师大版2019必修第二册)
(已下线)6.4.2平面与平面平行-【帮课堂】(北师大版2019必修第二册)江苏省无锡市辅仁高级中学2023-2024学年高一下学期期中考试数学试题江苏省无锡市辅仁高级中学2023-2024学年高二下学期期中考试数学试题
名校
解题方法
3 . 在
中,角
所对应的边分别为
,向量
,且![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d65783fb64de33f2639d42c15f3a7d45.png)
,点
为边
的中点,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/b55806f140a5e24e175123c698de52a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d65783fb64de33f2639d42c15f3a7d45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1b8a88a16125366536cb4ad658e0cf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c32e36834baf9472a2297856b297e547.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4581a3c0960f44f2fdafc789f3fea6db.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024-05-04更新
|
745次组卷
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4卷引用:高一 模块3 专题1 第4套 小题入门夯实练【人教B版】
(已下线)高一 模块3 专题1 第4套 小题入门夯实练【人教B版】第27题 解三角形基于边角转化,几何向量解析锦上添花(优质好题一题多解)(已下线)高一 模块3 专题1 第4套 小题入门夯实练【北师大版】安徽省智学大联考·皖中名校联盟2023-2024学年高一下学期期中检测数学试卷
名校
解题方法
4 . 在
中,角A,B,C的对边分别为a,b,c,S为
的面积,
,且
,则
的周长的取值范围是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e258ab9e600435b37465092243d99f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6984a43c616a76e0ffa2f3270123e9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5 . 风筝起源于春秋时期,是中国传统手工艺的代表,被称为人类最早的飞行器.如图所示,在一个简易风筝面的示意图中,AC垂直平分BD,E为垂足,
,
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/25/53c00987-17dc-4b7a-9143-e9ab844bc0bd.png?resizew=138)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c47fb4f0dbd619fecc5d69a8f44c2ac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc011d6e24d4edf9920f58a0a510bbdd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed6e8fb343d289461c07922963f849a9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/25/53c00987-17dc-4b7a-9143-e9ab844bc0bd.png?resizew=138)
A.8 | B.![]() | C.![]() | D.-8 |
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|
336次组卷
|
3卷引用:模块四 专题4 重组综合练(安徽)
名校
6 . 如图,已知等腰
中,
,
,点P是边
上的动点,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5472007145a04e00e2bde07e57fa926c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89d32ac592e3aff01931c258c6630d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2358c49ff7b77cbb3d70a087beebc3a5.png)
A.为定值10 | B.为定值6 |
C.为变量且有最大值为10 | D.为变量且有最小值为6 |
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解题方法
7 . 在
中,内角
的对边分别为
,且
,则
的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/e827d51b029e990634aa62dd63295dc2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2413c0b4c07621a6cab64c29c3172b18.png)
A.2 | B.4 | C.![]() | D.![]() |
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解题方法
8 . 在
中,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3014842cc5f4e9c6a5d9ecef27e1bc6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f8c53f43770c0d22fcbcd771a933fde.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2024高三·全国·专题练习
9 . 在
中,角
的对边分别为
,则“
为钝角”是“
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/791e8fb69baa40e26cb5e3182d13489e.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充要条件 | D.既不充分也不必要条件 |
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10 . 已知
中,
,
,若
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9da00d1b945de05a7a8435ca0bdd52ea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4650d1acd323f9e79b54be52f354a41.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcabf32fb1fce65ef6a94def5a32b6af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afcce17e4c333353b8b694d0713a581e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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|
167次组卷
|
5卷引用:江西省抚州市金溪县第一中学等校2023-2024学年高一下学期期中考试数学试卷
江西省抚州市金溪县第一中学等校2023-2024学年高一下学期期中考试数学试卷(已下线)第17题 解三角形中的求角问题(压轴小题)(已下线)专题04 解三角形小题常考题型归类-期末考点大串讲(人教B版2019必修第四册)江西省兴国平川中学等多校联考2023-2024年高一下学期期中调研测试数学江西省宜春市铜鼓中学等学校2023-2024学年高一下学期期中调研测试数学试卷