解题方法
1 . 在直三棱柱
中,四边形
是边长为3的正方形,
,
,点
分别是棱
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/23/cd310c53-ba9e-4d45-8b70-1aecc6b5f8ed.png?resizew=151)
(1)求
的值;
(2)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac61c24f99a4e466f1e2ea011893866.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/269c684310d0f7b5b9bf0a291e7ee748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea4dfea6353fc25e88535e865a4982cb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/23/cd310c53-ba9e-4d45-8b70-1aecc6b5f8ed.png?resizew=151)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6bfb6876bfebf8175326c61d394cdbb2.png)
(2)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4999d4fbcbe15f78c29d518f25d317c2.png)
您最近一年使用:0次
解题方法
2 . 如图,在棱长为2的正方体
中,M为
的中点,
,
分别在棱
,
上,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/22/5b3f9310-0c86-449b-8def-df53a6e582ea.png?resizew=156)
(1)求AM的长.
(2)求
与
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/522230546d4b802094e86ceb48c2ba38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/038611b6f26e2c1a8cc6aee90f881203.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a86c5baa19e466196686651467151ad4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/22/5b3f9310-0c86-449b-8def-df53a6e582ea.png?resizew=156)
(1)求AM的长.
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c54dc0ff58e8c7d1035c2dff8572b30f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c1dd5a3f83a7455eb3630364397accc.png)
您最近一年使用:0次
名校
解题方法
3 . 如图,在直棱柱
中,
,
,
,
是
的中点,点
在
上.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/11/8c417964-47ed-4563-a5d7-ab2d7e4d9a68.png?resizew=114)
(1)求证:
;
(2)求
与
所成角的余弦值;
(3)若
,求点
,
之间的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca38004c7744a7567bef30f0674fe60f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a3cc9cccfb4c260dac05f4ed57e8c10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/11/8c417964-47ed-4563-a5d7-ab2d7e4d9a68.png?resizew=114)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24b201f1e798eb74963b98f2b0da4132.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b7d857811cbd619f868d951aa7a0ab8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fd4c85bb98a2a0afddd7ed92578ad2e.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1851ea60a25f3c76dcf01418bc9da0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
您最近一年使用:0次
2023-11-17更新
|
144次组卷
|
2卷引用:湖南省湘潭市湘潭大学附属实验学校2023-2024学年高二上学期11月期中数学试题
名校
4 . 已知空间三点
,
,
,设
,
,
.
(1)判断
的形状;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d5632f8390c6a049e74273f82c4ea6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b446b2ae2ea36202e018afe8d11a6b96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6494a66af58db82efaedbaac43544135.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/de5b6afcd86c9a6ee0ec615a27dd506e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7894a1a495d4fa4d7959d94a97dabc55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cffd765098995fcbcccbd30301202368.png)
(1)判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/147d813d9ed7452475cc47665b424af7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
2023-11-13更新
|
204次组卷
|
2卷引用:广东省广州市华南师范大学附属中学2023-2024学年高二上学期期中数学试题
解题方法
5 . 如图,在直三棱柱
中,
,
,
,
,
是
的中点.
(1)试建立适当的空间直角坐标系,并写出点
,
的坐标;
(2)求
的长
(3)求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c279c8033acb94c3f91be2e05b0a6bf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/267880e605306851d8f46be77b11f9c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1192b3111a6dad01bba5227472bb4072.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/2023/11/3/8da16160-450d-4b7e-8727-320ec7f8bd67.png?resizew=120)
(1)试建立适当的空间直角坐标系,并写出点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
(3)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30c7c9b452fba2c98370cd2cf692aceb.png)
您最近一年使用:0次
解题方法
6 . 如图,平行六面体
的所有棱长均为
,底面
为正方形,
,点
为
的中点,点
为
的中点,动点
在平面
内.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/13/be3929e2-2824-450f-8f3c-a8f2a113558e.png?resizew=229)
(1)若
为
中点,求证:
;
(2)若
平面
,求线段
长度的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/226f9d090749325578fc389f62567efa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/13/be3929e2-2824-450f-8f3c-a8f2a113558e.png?resizew=229)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f20bcf554e725cbacaa9426a86a38c0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4e04d30b126e9edbfc0b6036feff1a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/59375dfae3a8ec264204cfe78caac97d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
您最近一年使用:0次
2023-04-12更新
|
1960次组卷
|
5卷引用:河北省保定市2023届高三一模数学试题
河北省保定市2023届高三一模数学试题专题16空间向量与立体几何(解答题)(已下线)模块六 专题1 易错题目重组卷(河北卷)(已下线)第05讲 空间向量及其应用(十六大题型)(讲义)-2(已下线)第一章 空间向量与立体几何(知识归纳+6类题型突破)-2023-2024学年高二数学单元速记·巧练(人教A版2019选择性必修第一册)
7 . 已知空间直角坐标系中有三点
.
(1)求三角形ABC的中线CM的长;
(2)证明三角形ABC是等腰直角三角形.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6502dce8d6612310876786e577ba8a87.png)
(1)求三角形ABC的中线CM的长;
(2)证明三角形ABC是等腰直角三角形.
您最近一年使用:0次
2023-01-20更新
|
144次组卷
|
2卷引用:青海省海东市第一中学2022-2023学年高二上学期12月期中考试数学试题
解题方法
8 . 如图,在棱长为2的正方体
中,E,F分别为棱AD,
的中点.
![](https://img.xkw.com/dksih/QBM/2022/10/28/3097316831305728/3099093624856576/STEM/1415876171b9443bb84330cabc955289.png?resizew=270)
(1)求EF的长度;
(2)求直线EF与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://img.xkw.com/dksih/QBM/2022/10/28/3097316831305728/3099093624856576/STEM/1415876171b9443bb84330cabc955289.png?resizew=270)
(1)求EF的长度;
(2)求直线EF与平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b0a582c36d62d83c16425b2f54b4354.png)
您最近一年使用:0次
2022-10-30更新
|
441次组卷
|
2卷引用:河北省沧州市部分学校2023届高三上学期10月联考数学试题
解题方法
9 . 已知长方体
中,
,圆
内切上底面正方形
,
为圆
上的动点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/28/97e857a8-d3b0-4062-bd12-ed1f4e3d7c1d.png?resizew=196)
(1)求点
到直线
的距离;
(2)求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff38e7c636efbfb8ade47a3e1c0c98d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83799719597be81a1efcaa8e7b1beded.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252053b853152bd294a8315debd00b92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1ced66da8ee7f49cf527b8d136a01ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/655b6a742dbacdab5aaa298007663dd4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252053b853152bd294a8315debd00b92.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/28/97e857a8-d3b0-4062-bd12-ed1f4e3d7c1d.png?resizew=196)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/289d7a880379d6060065c829b45b0ed6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
您最近一年使用:0次
10 . 长方体
中,
,
,
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/8/d8b0ee5f-f83e-425b-8245-30bd51929cd4.png?resizew=134)
(1)求对角线
的长度;
(2)求点
到平面
的距离.
![](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/4893fbcb191420e06a239e63493626f5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/8/d8b0ee5f-f83e-425b-8245-30bd51929cd4.png?resizew=134)
(1)求对角线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62a52848aff08399a36f217356007a4b.png)
您最近一年使用:0次
2022-10-05更新
|
254次组卷
|
3卷引用:湖南省郴州市永兴县童星学校2022-2023学年高二上学期第一次月考数学试题
湖南省郴州市永兴县童星学校2022-2023学年高二上学期第一次月考数学试题广东省湛江市雷州市白沙中学2022-2023学年高二上学期第一次月考数学试题(已下线)人教A版高二上学期【期中押题卷02】(测试范围:第1~2章)-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(人教A版2019选择性必修第一册)