名校
1 . 正方形
沿对角线
折成直二面角,则异面直线
与
夹角的正弦值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.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
2023-01-09更新
|
242次组卷
|
2卷引用:安徽省马鞍山中加双语学校2022-2023学年高二上学期期中数学试题
名校
解题方法
2 . 如图所示,已知平行六面体
中,
,
,
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/28/affbd9d7-14ff-4254-81d2-75d9184ec866.png?resizew=177)
(1)求
长度;
(2)求异面直线
与
所成的角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27db558e8db4c957654c8e5cecd2d2dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55a2310cbba5e050488cd9296eb195d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f03305c49fc1e97c268296944e4e60f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/28/affbd9d7-14ff-4254-81d2-75d9184ec866.png?resizew=177)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
(2)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
您最近一年使用:0次
3 . 已知向量
,
,
,若
是平面ABC的法向量,则mk的值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97a9b9360505c80e01d822d9e5b2bb5d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9e409a3665b8fffc712b47c1ae09d5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82ac537061e1029e69a85114515ec4a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4f605ec0729ce6d72237ad662a06862.png)
A.3 | B.2 | C.6 | D.4 |
您最近一年使用:0次
2023高三·全国·专题练习
名校
4 . 如图,已知正方体
的棱长为1,则线段
上的动点P到直线
的距离的最小值为______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/18/e4f8012c-0205-4b6f-90bc-cbd72815b2ab.png?resizew=205)
您最近一年使用:0次
2022-08-21更新
|
912次组卷
|
5卷引用:专题1 空间几何体的长度运算(基础版)
(已下线)专题1 空间几何体的长度运算(基础版)(已下线)7.4 空间距离(精练)北京市一零一中学2023届高三下学期统练数学试题(一)江苏省南京市秦淮中学2022-2023学年高二下学期3月月考数学试题(已下线)考点11 空间距离 2024届高考数学考点总动员【练】
解题方法
5 . 如图所示,在四棱锥
,
面
,底面
为正方形.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/28/13a3b9d0-f1b7-429a-9a80-40f354843708.png?resizew=187)
(1)求证:
面
;
(2)已知
,在棱
上是否存在一点
,使
面
,如果存在请确定点
的位置,并写出证明过程;如果不存在,请说明理由.
![](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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/28/13a3b9d0-f1b7-429a-9a80-40f354843708.png?resizew=187)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a23f01af749100e1888bba06268843db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa69a2247ad4d5231aa361349b12f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
您最近一年使用:0次
2023-01-06更新
|
1154次组卷
|
5卷引用:2022年7月辽宁省普通高中学业水平合格性考试数学试卷
2022年7月辽宁省普通高中学业水平合格性考试数学试卷(已下线)第6章:空间向量与立体几何 章末检测试卷-【题型分类归纳】2022-2023学年高二数学同步讲与练(苏教版2019选择性必修第二册)(已下线)模块三 专题4 空间向量与立体几何--拔高能力练(高二苏教)专题07B立体几何解答题(已下线)1.4.1 用空间向量研究直线、平面的位置关系【第三练】
名校
解题方法
6 . 如图,四棱锥
中,底面
是平行四边形,平面
底面
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/8/8347c7bb-6759-4a16-b023-f15ef24878a1.png?resizew=225)
(1)求证:平面
平面
;
(2)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5164a3cc47e266446d49127e2ef10c37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8dc6db50a9709c3f4d84eee7bdf1250.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31b2cc1d0bfd22c88286880b9da1f6f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77e4907ad1efa41c6cefe931737328fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e1f4f255d191786f7d330d278868c2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30b0393ce62b24aa5f9b740d4cc6743b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/8/8347c7bb-6759-4a16-b023-f15ef24878a1.png?resizew=225)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed5f0cfc1049f84a04c81bd213afb8d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c909cd1b6f3fa1ec39eb245e8f5c11c.png)
您最近一年使用:0次
2023-01-06更新
|
554次组卷
|
2卷引用:四川省成都市第二十中学校2022-2023学年高三上学期一诊模拟考试(二)数学试题
解题方法
7 . 如图,在棱长为2的正方体
中,线段DB的中点为F,点G在棱CD上,且满足
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/7/0f45fb62-574c-4848-bd0d-51ecbb547ab1.png?resizew=164)
(1)若E为棱
的中点,求证:
;
(2)求直线
与
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf9e1ac9b20514f7fe9d2e00c37edede.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/7/0f45fb62-574c-4848-bd0d-51ecbb547ab1.png?resizew=164)
(1)若E为棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d435974639ea2850bb5c21efe64b123b.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f35f348ed8a1690d3ed02aa64459ca50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fec5bd77cfc1313bc200480cc66c766.png)
您最近一年使用:0次
2023-01-04更新
|
253次组卷
|
2卷引用:皖豫名校联盟2022-2023学年高二上学期阶段性测试(二)数学试题
解题方法
8 . 若正三棱柱
的所有棱长都相等,
是
的中点,则直线
与平面
所成角的余弦值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0772e18d6605a5c10ade8b5ecd1ae77.png)
您最近一年使用:0次
名校
解题方法
9 . 如图,等腰
,
,点
是
的中点,
绕
所在的边逆时针旋转至
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/4/f4b1b9a8-9691-4e04-98f5-288157d2f118.png?resizew=177)
(1)求
旋转所得旋转体的体积
和表面积
;
(2)求直线
与平面
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c633830c6e2ac6d8d6e18890ef5ee33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50bf7d7fa347c09dedde116bb787a3c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaf1438142deeac876fc7dc50552e552.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e5e2bc8e6f3c976f73c9595061badca.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/4/f4b1b9a8-9691-4e04-98f5-288157d2f118.png?resizew=177)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/866b81a8384cce4f24867baca2e6820c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be54e84508decfcce6d2fcbe6c8c1a92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/564743a1fe463a981f06914e3cb5e03e.png)
您最近一年使用:0次
解题方法
10 . 如图,在正四棱锥
中,
,点M,N分别在
上,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/4/461c6c0a-e983-4703-8229-c40958911ea7.png?resizew=211)
(1)求证:
平面
;
(2)当
时,求平面
与平面
所成二面角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f83a04565a8ebaa111894b724b0ba266.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e87d4d9a3b0f961483bf4f68be9c9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3c2833cccccee8830d29af0977338dc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/4/461c6c0a-e983-4703-8229-c40958911ea7.png?resizew=211)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cbc74aa0d6c8ff230e586227f2eed9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3cf0f585938ede9eca890a6eb326d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1885efcff0b903e314057dd153578600.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
2023-01-03更新
|
425次组卷
|
4卷引用:江苏省徐州市2022-2023学年高三上学期期末复习数学试题
江苏省徐州市2022-2023学年高三上学期期末复习数学试题(已下线)安徽省江南十校2022届高三下学期3月一模理科数学试题变式题16-20(已下线)6.3.3空间角的计算(2)河北省石家庄市第一中学东校区2022-2023学年高二上学期教学质量检测数学试题(四)