1 . 已知二面角
为直二面角,
,
,
,
,则
与
,
所成的角分别为
,
,
与
所成的角为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/754bbd99327195520a4ca3ce3b9a0577.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb0b6de90bb936cdb09629123100145d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16acea101c98a280a70c2fa0b2c04dd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4f4f3a6e86e58e9a5cd2f2dfdea2b08e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7447cd809ebd601b1a033ec392de0f48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3427311203b1958b9ff89084c66a09a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2380418bca9ec15393a8dfcaa51b0d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
您最近一年使用:0次
名校
解题方法
2 . 已知四棱锥
的底面为直角梯形,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b377f22aafd3742ad860f77abaacef.png)
底面
,且
,
,则异面直线
与
所成的角的余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd8e727e4efc22b49649f71ae9c9d84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2b377f22aafd3742ad860f77abaacef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de217862f189f14a9ffa0c40f5368f6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
3 . 已知点
,
,
,
,则异面直线
与
所成角的余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4098582bf9572f219d7a7d1f30562d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a9e56551e3aa3385d21d8a82bbec79c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866aa11c73d426cc2efef37aebb39f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb1d74a68bdccc1dec4221753c2fe98c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-04-30更新
|
158次组卷
|
3卷引用:专题02 空间向量与立体几何--高二期末考点大串讲(苏教版2019选择性必修第二册)
(已下线)专题02 空间向量与立体几何--高二期末考点大串讲(苏教版2019选择性必修第二册)江西省抚州市金溪县第一中学等校2023-2024学年高二下学期期中考试数学试卷 江西省南昌市安义中学2023-2024学年高二下学期4月期中调研测试数学试题
名校
解题方法
4 . 如图,
是一个由棱长为
的正四面体沿中截面所截得的几何体,则异面直线
与
夹角的余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/878e89b6eca35e34c863e832a2c661db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
5 . 《九章算术》中,将底面为长方形,且一条侧棱与底面垂直的四棱锥称之为阳马.阳马
中,若
平面
,且
,则异面直线
与
所成角的余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee76246dee4f1670e4f21e5eb393b52c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2024-04-19更新
|
428次组卷
|
6卷引用:江苏省南京市五所高中学校合作联盟2023-2024学年高二下学期期中学情调研数学试卷
江苏省南京市五所高中学校合作联盟2023-2024学年高二下学期期中学情调研数学试卷(已下线)模块五 专题2 全真基础模拟2(苏教版高二期中研习)(已下线)高二 模块3 专题1 第1套 小题入门夯实练(苏教版)(已下线)模块四 期中重组卷1(江苏南京)(苏教版)(高二)江苏高二专题01立体几何与空间向量(第一部分)(已下线)专题02 空间向量与立体几何--高二期末考点大串讲(苏教版2019选择性必修第二册)
名校
解题方法
6 . 正方体
中,
,
分别是
,
的中点,则直线
与直线
所成角的余弦值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e3334853138fb74687d66b1e45f2fd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
您最近一年使用:0次
解题方法
7 . 如图,在四棱锥中,底面
是边长为1的正方形,侧棱
的长为1,且
与
的夹角都等于60°,M在棱
上,
,设
,
.
(1)试用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae951e0bb5a2a406f1572fc1e4964265.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7a046d7060dc843c78af806ee24f556.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7a046d7060dc843c78af806ee24f556.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7239b3f2d88c2e45e17e5de9ae1a332.png)
您最近一年使用:0次
名校
解题方法
8 . 在正方体
中,点
分别是棱
的中点,则异面直线
所成角的余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b199a99e53d67ff4abf233930961a29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e918aef399d1e9104372ccc42ef25e8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f70cf5f45bd188a4e1ae1d5b0c688b6a.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-03-29更新
|
468次组卷
|
2卷引用:江苏省连云港市东海高级中学2023-2024学年高二下学期第一次月考数学试卷
名校
解题方法
9 . 如图,在正方体
中,点M,N分别是棱
上的点,且
,
,则异面直线AM与CN所成角的余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3da8c338342e38c9aa3f274c053fd5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f650481726f091d693138126453e050.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89628f63e5d377417669602f8fe2bdd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b9fc281569c12d22f857fb15c1e42d1.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
23-24高二下·江苏·课前预习
解题方法
10 . 如图,在直三棱柱
中,
,棱
,N为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/7/c7630813-7f01-4f9f-9ad4-5585ef680a59.png?resizew=131)
(1)求
的长;
(2)求
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84efd0032219979f6e893e977f6229ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/7/c7630813-7f01-4f9f-9ad4-5585ef680a59.png?resizew=131)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7e374399249243b5ca1cb0bcc5e85c6a.png)
您最近一年使用:0次