名校
1 . 已知异面直线
所成角的大小为
,直线
且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2979f64c85f82d8975d73ee1c342de.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50297ad9f7256b4d2efc3462289f18b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e5fa72f2878b476bc57f0df12d6555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6340b8c5618b64a78e83fe4ab075f0c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94ddbceabfc3d02a6b6b921f6bf5b0dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a2979f64c85f82d8975d73ee1c342de.png)
您最近一年使用:0次
2 . 如图.已知圆锥的轴截面为等边
分别为
,
的中点.
为底面圆周上一点.若
与
所成角的余弦值为
.则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ec5d678ec42846e1d28301e3bfd4be.png)
______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e32f416d1558ad4512f0628c635607b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56d266a04f3dc7483eddbc26c5e487db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ec5d678ec42846e1d28301e3bfd4be.png)
您最近一年使用:0次
2024-01-03更新
|
479次组卷
|
4卷引用:河南省TOP二十名校2024届高三上学期调研考试九数学试卷
河南省TOP二十名校2024届高三上学期调研考试九数学试卷广东省广州市广东实验中学2024届高三上学期大湾区数学冲刺卷(三)(已下线)考点14 余弦定理及应用 --2024届高考数学考点总动员【练】(已下线)2024届新高考数学信息卷2
名校
3 . 在棱长为2的正方体
中,
,点M为棱
上一动点(可与端点重合),则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c88961cc1ea9e81bd1a76dddb2ce2276.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
A.当点M与点A重合时,![]() ![]() |
B.当点M与点B重合时,![]() |
C.当点M为棱![]() ![]() ![]() |
D.直线![]() ![]() ![]() |
您最近一年使用:0次
2023-12-27更新
|
420次组卷
|
5卷引用:河南省青桐鸣2023-2024学年高二上学期12月联考数学试题
名校
4 . 在正方体中,E,F分别为
,
的中点.取点
,C,E,F,若一条直线过其中两点,另一条直线过另外两点,则( )
A.两条直线为异面直线是必然事件 |
B.两条直线互相垂直的概率为![]() |
C.两条直线互相平行与互相垂直是对立事件 |
D.两条直线都与直线![]() |
您最近一年使用:0次
解题方法
5 . 如图,在四棱台
中,
平面
,上、下底面均为正方形,
,
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0424446817f60c18f8e4e3cc202ad99.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ecf072589c0f901d92f6bda111d841.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f54638dd4ebf19815a1333d84e42f927.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08c596aff6331566a0149449183c2024.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/13/c4f26c32-0b61-4a8f-b561-d63773b886cd.png?resizew=190)
A.直线![]() ![]() |
B.异面直线![]() ![]() ![]() |
C.若该四棱台内(包括表面)的动点![]() ![]() ![]() ![]() ![]() |
D.若底面![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
6 . 从条件①
,②
中选择一个,补充在下列横线中,并解答问题.
如图,在直三棱柱
中,点
在线段
上,已知______,且
,
,
.(若选择多个条件分别解答,则按第一个解答给分).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/3/416eee38-a3bc-4243-a403-b304040b9bb4.png?resizew=165)
(1)求证:
平面
;
(2)求异面直线
与
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/429228f882da65a8e0064c88d02b8e40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5181b97a7e43959b8455680157c3b644.png)
如图,在直三棱柱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b9b8c14faadfc05738abbf67e1aa5db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44ad693aaa638917adbbbb947fadff75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68918379531894442f55c7257549ea33.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/8/3/416eee38-a3bc-4243-a403-b304040b9bb4.png?resizew=165)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/231673dd67ab79d3c5da73904ceade1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4734735213b599a9915e1ed91a5d8ce4.png)
(2)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
您最近一年使用:0次
名校
7 . 如图1,矩形ABCD中,
,等腰梯形ADEF中,
,
.将梯形ADEF沿AD折起,得到如图2所示的多面体
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1391573c30964b87ca3429bf67ae22aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d354155f71a1736c1c9186168695edd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44b31e19fa5cf6d4d5f14f90e87d34ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebdfd1d8f2087da49df379f6330e4cc2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/26/888c35d5-14c5-4872-9f4e-426104a1957d.png?resizew=273)
A.异面直线![]() ![]() |
B.当二面角![]() ![]() ![]() |
C.存在某个位置,使得![]() ![]() |
D.点D到平面![]() ![]() ![]() |
您最近一年使用:0次
解题方法
8 . 已知三棱锥
,
,其余棱长均为
,则下列命题正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74183811d7058144edcc6932f0c35199.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
A.该几何体外接球的表面积为![]() |
B.直线![]() ![]() ![]() |
C.若点![]() ![]() ![]() |
D.![]() ![]() ![]() |
您最近一年使用:0次
解题方法
9 . 素描几何体是素描初学者学习绘画的必学课程,是复杂形体最基本的组成和表现方式,因此几何体是美术人门最重要的一步.素描几何体包括:柱体、锥体、球体以及它们的组合体和穿插体.十字穿插体,是由两个相同的长方体相互从中部贯穿而形成的几何体,也可以看作四个相同的几何体(记为
拼接而成,体现了数学的对称美.已知在如下图的十字穿插体中,
,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1818d2bf345b6306a4be125897320ec8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/986a39eaeb393e93e14b98885518c4a4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/11/1bbfc9e4-ea46-4d1d-b5f5-6ebffae185f4.png?resizew=385)
A.![]() ![]() |
B.![]() ![]() ![]() |
C.平面![]() ![]() |
D.几何体![]() ![]() |
您最近一年使用:0次
解题方法
10 . 已知
分别是圆柱
上、下底面圆的圆心,
分别是上、下底面圆周上一点,若
,且直线
与
垂直,则直线
与
所成的角的正切值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e2c8e67ae6659fb77dc4e33154e4124.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abbe2aba242716238b79c46bb1f40e88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02bea5e9441f29e640664c0e68c1788b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd37244e07a7f1e6b0d8afdb469cf76e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abbe2aba242716238b79c46bb1f40e88.png)
A.![]() | B.![]() | C.![]() | D.2 |
您最近一年使用:0次