2023高三·全国·专题练习
名校
解题方法
1 . 如图,正四面体ABCD(所有棱长均相等)的棱长为1,E,F,G,H分别是正四面体ABCD中各棱的中点,设
,
,
,试采用向量法解决下列问题:
(1)求
的模长;
(2)求
,
的夹角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e7a93a1399ff7a2bde342652479241b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae92f0c583cc9daf980a8621ad96aef5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89f111250ea56c59b179cfc7b5db12cd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/10/12/2ae55861-e7c0-4a16-8bac-8e9b6fec1050.png?resizew=165)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6b5a51e65e9b56a9970de33ead263a9.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6b5a51e65e9b56a9970de33ead263a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21162e18e3c389215ac1a44858d6c5a7.png)
您最近一年使用:0次
2022-09-26更新
|
437次组卷
|
4卷引用:河南省郑州市回民高级中学2022-2023学年高二上学期期中数学试题
河南省郑州市回民高级中学2022-2023学年高二上学期期中数学试题广西玉林市第十一中学等校2023届高二上学期期中联合测试数学试题(已下线)第51讲 空间向量的概念(已下线)第02讲 1.1.2空间向量的数量积运算(7类热点题型讲练)-【帮课堂】2023-2024学年高二数学同步学与练(人教A版2019选择性必修第一册)
解题方法
2 . 在长方体
中,
,M为
中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/d9eff465-6850-4ded-83f6-0acf9d167e7d.png?resizew=178)
(1)求异面直线
与
所成角的余弦值;
(2)
分别为直线
上的点,求
的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5481483f111e503a0c92dc3b4fa4f634.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88517eaaa7c6f423f565f938404105a2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/7/d9eff465-6850-4ded-83f6-0acf9d167e7d.png?resizew=178)
(1)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6bce3d91ca23b86d8c6625f2632e437.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3201876f4b5bd90a718443fc662c13b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f82358b724051b032c7ec734a226ae84.png)
您最近一年使用:0次
2022-12-06更新
|
360次组卷
|
5卷引用:河南省濮阳市2022-2023学年高二上学期期中数学试题
河南省濮阳市2022-2023学年高二上学期期中数学试题河南省青桐鸣2023届高二上学期11月联考数学试题青铜鸣2022-2023学年高二上学期联考数学试题河南省周口市项城市正泰博文学校等3校2022-2023学年高二上学期11月月考数学试题(已下线)第二章 立体几何中的计算 专题二 空间距离 微点6 空间两条直线的距离(二)【培优版】
3 . 如图,设E是正方体
棱
的中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/0ade4271-9346-4124-ae93-16e048a6e864.png?resizew=155)
(1)求证:
;
(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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/833cfda415649b832cc136caed392753.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/0ade4271-9346-4124-ae93-16e048a6e864.png?resizew=155)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f88e7df45acca3fc3d3da3370f0c32bc.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f1158eaa2e338f564eb18de5bef1d25.png)
您最近一年使用:0次
名校
解题方法
4 . 如图,平行六面体
的底面是菱形,且
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/0925bfe7-8c36-4788-b2b6-76b2b450f7b6.png?resizew=180)
(1)求
的长;
(2)求异面直线
与
所成的角.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52a6ee51af9b52152488b1772fa190fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e62266d9a9a49b89902837eb1152e536.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/27/0925bfe7-8c36-4788-b2b6-76b2b450f7b6.png?resizew=180)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
(2)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cabe764f05300ac83c7d16b685d27af4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2eb89294b31ffdd2680b4361e8994d7.png)
您最近一年使用:0次
2022-11-25更新
|
1376次组卷
|
6卷引用:河南省洛阳市2022-2023学年高二上学期期中数学理科试题
名校
解题方法
5 . 已知两条异面直线
对应的方向向量分别是
,
,则异面直线
的夹角为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ade9020718f2190f5b2b571ae9f47e68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb0abfe1b8fbd7c5f8d81bd8648c23c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44434b647ec546fe787e2164e0be6cd2.png)
您最近一年使用:0次
2022-11-15更新
|
321次组卷
|
2卷引用:河南省驻马店市上蔡县衡水实验中学2022-2023学年高二上学期期中文科数学试题
名校
解题方法
6 . 如图,在直三棱柱
中,
,
,
,
、
分别是
、
的中点,则异面直线
与
所成角的余弦值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/18/43156418-211f-4a74-a082-65da2ca32895.png?resizew=130)
![](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/462b1c65b1b233ab98a90c164c0968c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/18/43156418-211f-4a74-a082-65da2ca32895.png?resizew=130)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-11-14更新
|
345次组卷
|
3卷引用:河南省安阳市2022-2023学年高二上学期期中数学试题
2022高三·全国·专题练习
名校
解题方法
7 . 如图,圆锥的底面半径
,高
,点C是底面直径AB所对弧的中点,点D是母线PA的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/028f38f9-1551-4afa-9f17-d994c16dba54.png?resizew=115)
(1)求圆锥的侧面积和体积;
(2)求异面直线CD与AB所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9774f83067ed956a551bc41adcce0469.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f091d853ef8f4133dfa73d7b9622cee6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/028f38f9-1551-4afa-9f17-d994c16dba54.png?resizew=115)
(1)求圆锥的侧面积和体积;
(2)求异面直线CD与AB所成角的余弦值.
您最近一年使用:0次
2022-11-06更新
|
120次组卷
|
3卷引用:河南省驻马店市上蔡县衡水实验中学2022-2023学年高三上学期期中数学文科试题
解题方法
8 . 在三棱锥
中,平面
平面BCD,
,
,
为等边三角形,E是棱AC的中点,F是棱AD上一点,若异面直线DE与BF所成角的余弦值为
,则AF的值可能为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf6dc837ae85207789b94d109c5c2eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff9c7cbcc38b28d45c8539710e5b260a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bbf626487d9c37f5f15b3d8e08190f8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7007bbab668d985a9313d9df989475a.png)
A.![]() | B.1 | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
9 . 正方体
中,M、N分别是
、
的中点,则直线
与MN所成角的余弦值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72545bef56c4e32d1b76489bd32c3842.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
您最近一年使用:0次
2022-11-02更新
|
232次组卷
|
2卷引用:河南省许平汝名校2022-2023学年高二上学期期中考试数学试题
名校
解题方法
10 . 已知四棱锥
的底面
是边长为1的正方形,
平面
,线段
的中点分别为
,
,若异面直线
与
所成角的余弦值为
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fb2e071d4e01107dcf7d95cbb86b415.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8508301b95f49653ce671a25b18fdad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee14db57f0c762aad845cf5b4a243c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/576501d681ad21ea2f8f1f99b57e468a.png)
A.1 | B.![]() | C.2 | D.3 |
您最近一年使用:0次