1 . 如图,平面
平面
,四边形
为正方形,
,
.
(1)求证:
平面
;
(2)若点
为
的中点,求异面直线
与
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31effd1d3f7ce1f6e57be80c7f3af4ec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad3a079cfdcca9acdacecbf08f9f78cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45acdbac251ca6b76a166c1242e71df9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd5ca0580725950b129c5d1438bdd3d3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/25/faa899cf-70a6-489b-9f26-f1ba07a0cf54.png?resizew=174)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5dd496ee0c1170ef6dcc48266ee444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8257b6bd25104e07b9ad935c0a3aac4.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
您最近一年使用:0次
解题方法
2 . 如图,已知四棱锥P—ABCD,底面ABCD为菱形,
平面
,
,
分别是
,
的中点.
为
上的动点,
与平面
所成最大角的正切值为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/23/3d6ce38f-e394-4f55-a270-1727ad14d94b.png?resizew=218)
(1)证明:
;
(2)求异面直线
与
所成的角的余弦值;
(3)若
,求三棱锥
的体积.
![](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/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589786dd7c3a2679c3230b671cd232d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/839c7616cd0d90265f4b2c9c021254fe.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/23/3d6ce38f-e394-4f55-a270-1727ad14d94b.png?resizew=218)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/304e9d63e7fdc531f4f7b805b765a1b1.png)
(2)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b115316e0fcd2ef46a4dd383472996e4.png)
您最近一年使用:0次
解题方法
3 . 如图,在四棱锥
中,底面
是直角梯形,
,平面
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/28/8099f006-7d9c-4242-ae7e-72775e854ade.png?resizew=150)
(1)证明:平面
平面
;
(2)求直线
与平面
夹角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ee1c0e1894891a82c6fd7816f8fe220.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/3/28/8099f006-7d9c-4242-ae7e-72775e854ade.png?resizew=150)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/342d452a7b850cd3a15b23619ad39bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
解题方法
4 . 在三棱柱
中,如图所示,侧棱
底面
,点
是
的中点,
是
的中点,
,则
与
所成角的余弦值是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/3/0f62d7d0-b328-49ce-a09b-cc2c97289131.png?resizew=164)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6795cae2df43a722e1355e9562d93c09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/522230546d4b802094e86ceb48c2ba38.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d64211a5ac02cff871a3f4d9d2defcb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b7287da1de38b00f62a255ab1b9c6d0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/3/0f62d7d0-b328-49ce-a09b-cc2c97289131.png?resizew=164)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
5 . 如图,在四棱锥
中,四边形
为矩形,且
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/2/38ae0c01-7683-49ad-9e13-5a8b91d2cf89.png?resizew=175)
(1)求线段
的长度;
(2)求异面直线
与
所成角的余弦值;
(3)若
为
的中点,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f80f51c31583fea58fde645474d60b8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b80ee363635d73f601654339028daec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e598f65e3c3b3c1a047a575788baee94.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/2/38ae0c01-7683-49ad-9e13-5a8b91d2cf89.png?resizew=175)
(1)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
(2)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
(3)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e253f0fbfa13dca5b4c7dce45fc47fe7.png)
您最近一年使用:0次
2023-01-01更新
|
572次组卷
|
4卷引用:安徽省滁州市定远县民族中学2022-2023学年高三上学期12月月考数学试题
安徽省滁州市定远县民族中学2022-2023学年高三上学期12月月考数学试题(已下线)模块一 专题11 空间向量与立体几何(已下线)第07讲 空间向量的数量积运算9种常见考法归类(1)河南省郑州市第一〇二高级中学2023-2024学年高二上学期10月月考数学试题
名校
6 . 在如图所示的四棱锥
中,四边形
为矩形,
平面
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/11/972220dd-6739-4543-9e94-8dcadb154141.png?resizew=171)
(1)证明:
平面
;
(2)若
,
,求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/11/972220dd-6739-4543-9e94-8dcadb154141.png?resizew=171)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30067b7b236d17af8a462f96a58d11bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cbe8961cca9440ea334ee049d109146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca48c18021e7be4bbb3e95576e1c1b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
您最近一年使用:0次
2022-12-10更新
|
345次组卷
|
3卷引用:安徽省滁州市第二中学、定远县第三中学2022-2023学年高二上学期12月联考数学试题
解题方法
7 . 如图,棱长为2的正方体中,E,F分别是
,DB的中点,G在棱CD上,且
,H是
的中点.建立适当的空间直角坐标系,解决下列问题:
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/5ecb8a2e-e5e5-4f11-8a07-7e5e25c00857.png?resizew=179)
(1)求异面直线EF和
所成角的余弦值;
(2)求FH的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/161f651ef002ac85870d46b04347b54f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dcaa043eed56b55c053fd9923b1d4bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f380fae9201fb0f46a3df1062a2bcdf2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/5ecb8a2e-e5e5-4f11-8a07-7e5e25c00857.png?resizew=179)
(1)求异面直线EF和
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f380fae9201fb0f46a3df1062a2bcdf2.png)
(2)求FH的长.
您最近一年使用:0次
2022-10-20更新
|
151次组卷
|
2卷引用:安徽省滁州市定远县育才学校2022-2023学年高二上学期12月月考数学试题
解题方法
8 . 如图,在平行六面体
中,以顶点
为端点的三条棱长均为6,且它们彼此的夹角都是60°,下列说法正确的有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/a3405046-a359-4a6f-9cc8-a15d6e378983.png?resizew=208)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff7ddbb49c644bf06ccbad885ba2c84a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0914b68f106a912420705b2f3928ca42.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/24/a3405046-a359-4a6f-9cc8-a15d6e378983.png?resizew=208)
A.![]() |
B.![]() ![]() |
C.向量![]() ![]() |
D.直线![]() ![]() ![]() |
您最近一年使用:0次
2022-10-20更新
|
414次组卷
|
2卷引用:安徽省滁州市定远县民族中学2022-2023学年高三上学期12月月考数学试题
名校
解题方法
9 . 如图,在三棱锥
中,
,
,
,则异面直线OB与AC所成的角是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/3/71a7bda4-f613-4721-8dc2-b84ff6a6433a.png?resizew=239)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4278c0911e7df78965e78cff69cac5f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c66aa9636ddecb69feb1dc17dc515a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/242b14a89363fa1e1a3b74ed989a5311.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/158f785a72486d466316c813ee695303.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/3/71a7bda4-f613-4721-8dc2-b84ff6a6433a.png?resizew=239)
A.30° | B.60° | C.90° | D.120° |
您最近一年使用:0次
2022-09-02更新
|
1185次组卷
|
7卷引用:安徽省滁州市定远县育才学校2022-2023学年高二上学期12月月考数学试题
名校
10 . 如图,在直三棱柱
中,
为
的中点,
交
于点
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/27/74a8a3bf-fce4-412b-9bac-b42aaf6bd731.png?resizew=144)
(1)求证:
平面
;
(2)求平面
与平面
的夹角的余弦值.
![](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/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81ff07ad0bf1241217558b357b84cfec.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/8/27/74a8a3bf-fce4-412b-9bac-b42aaf6bd731.png?resizew=144)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75aea24647cd4d0b4b9aa513bf5457b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac61c24f99a4e466f1e2ea011893866.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a211ad5a06b505b8365a62c1946f3cb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7b94e97d085cea077cb82a0b7d2f523e.png)
您最近一年使用:0次
2022-08-25更新
|
1534次组卷
|
4卷引用:安徽省滁州市九校2021-2022学年高二下学期3月月考数学试题