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
名校
解题方法
2 . 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
解题方法
3 . 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
4 . 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
|
1958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)
5 . 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
名校
解题方法
6 . 在四棱锥
中,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/11/f9e50116-7b45-4720-a545-b2128913ced5.png?resizew=160)
(1)证明:平面
平面
﹔
(2)若
,直线
与平面
所成的角为
,求
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6fe51e729f291bbcf9c6035f6d952f0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/11/f9e50116-7b45-4720-a545-b2128913ced5.png?resizew=160)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0063f3f48e49f2970ec7f097567cef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
您最近一年使用:0次
2022-09-09更新
|
865次组卷
|
4卷引用:江苏省扬州市高邮中学2022-2023学年高三上学期开学调研测试数学试题
11-12高二上·福建福州·期末
7 . 在边长是2的正方体ABCD﹣A1B1C1D1中,E,F分别为AB,A1C的中点.应用空间向量方法求解下列问题.
![](https://img.xkw.com/dksih/QBM/2021/8/5/2779686591709184/2821531486633984/STEM/f8210408b4cd4ed99554b6674eb909ec.png?resizew=170)
(1)求EF的长
(2)证明:EF∥平面AA1D1D;
(3)证明:EF⊥平面A1CD.
![](https://img.xkw.com/dksih/QBM/2021/8/5/2779686591709184/2821531486633984/STEM/f8210408b4cd4ed99554b6674eb909ec.png?resizew=170)
(1)求EF的长
(2)证明:EF∥平面AA1D1D;
(3)证明:EF⊥平面A1CD.
您最近一年使用:0次
2021-10-03更新
|
677次组卷
|
14卷引用:2011年福建省福州市高级中学高二上学期期末理科数学卷
(已下线)2011年福建省福州市高级中学高二上学期期末理科数学卷(已下线)2012-2013学年云南大理州宾川县第四高级中学高二月考理科数学卷2015-2016学年安徽省安庆一中高二上学期期末理科数学卷2015-2016学年安徽省安庆一中高二上期末理科数学试卷(已下线)专题8.7 立体几何中的向量方法(讲)-浙江版《2020年高考一轮复习讲练测》(已下线)【新教材精创】1.1.3+空间向量的坐标与空间直角坐标系+导学案-人教B版高中数学选择性必修第一册(已下线)专题8.7 立体几何中的向量方法(精讲)-2021年新高考数学一轮复习学与练(已下线)专题8.7 立体几何中的向量方法(讲)- 2022年高考数学一轮复习讲练测(新教材新高考)(已下线)专题1.9 空间向量的应用-重难点题型精讲-2021-2022学年高二数学举一反三系列(人教A版2019选择性必修第一册)河北省唐山市遵化市2021-2022学年高二上学期期中数学试题(已下线)第三章《空间向量与立体几何》章节复习巩固(基础练+提高练)-2021-2022学年高二数学同步训练精选新题汇编(人教A版选修2-1)(已下线)3.2 立体几何中的向量方法(基础练+提高练)-2021-2022学年高二数学同步训练精选新题汇编(人教A版选修2-1)湖北省黄冈市黄州中学(黄冈市外国语学校)2023-2024学年高二上学期第一次阶段性测试数学试题云南省元阳高级中学2023-2024学年高二上学期10月月考数学试题
名校
解题方法
8 . 在棱长是2的正方体
中,E,F分别为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/cfd77373-b5bf-44a5-98c9-c3eadd471d27.png?resizew=154)
(1)求
的长;
(2)证明:
平面
;
(3)证明:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9e5ee662272a9cda713dcff67f57155.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/cfd77373-b5bf-44a5-98c9-c3eadd471d27.png?resizew=154)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06222ee533c2484ab25321a6abbf98cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7253ffd3fc633d861810ee2e872188b6.png)
(3)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a5f445af1ae136773cb338920552ff2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74bca84ad86c648d3bb20c8909c8da3f.png)
您最近一年使用:0次
2021-11-11更新
|
488次组卷
|
3卷引用:广东省佛山市顺德区文德学校2021-2022学年高二上学期第一次阶段测试数学试题
名校
9 . 如图,在四棱锥
中,
底面ABCD,
,
,
,
,点E为棱PC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/be503ace-39ff-416d-bda1-df9c2f935574.png?resizew=185)
1
证明:
;
2
求BE的长;
3
若F为棱PC上一点,满足
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d02bd5cfe804460846423e77f72db10f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb4564baf209de77802d46cda82995c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e51fc7d1b20a1ce1761714c1733f0511.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/729d5cb74bb927aa549ce596a35b26b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97b175a9ea8c1c191810c1e324a5a9e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a9fa8832f98b5418a7d75892f7951b8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/be503ace-39ff-416d-bda1-df9c2f935574.png?resizew=185)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03e25d646e74788c6a47fe0e88b0cc4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a389e0b0232e986d1c341b45e5b28e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a1b8317de5fb3c38c59859622f4c4b0.png)
您最近一年使用:0次
名校
10 . 如图,三棱柱
中,△ABC是正三角形,
,平面
平面
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/1b35c7ea-0865-4963-9bcb-bf6da5b7af00.png?resizew=213)
(1)证明:
;
(2)证明:求二面角
的余弦值;
(3)设点
是平面
内的动点,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4339a40ae9d1947ec3a4b3e2fa3a16cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61cdaadeae37736a1e6dd93fa1fe712f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7e3c9e7c05de9838c0c5d762720d3ef.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/5/1b35c7ea-0865-4963-9bcb-bf6da5b7af00.png?resizew=213)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d19c98253667b5b010c4ef438b431121.png)
(2)证明:求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fbe6e26981b704a3f8733d70fcdfb0c.png)
(3)设点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dcd67e95740848e6f11adf10fc03304.png)
您最近一年使用:0次