解题方法
1 . 如图,四棱锥
的底面
是矩形,
底面
,点
分别在
上, 且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/72c31fb0-85a9-48ec-a152-67dac6ebd895.png?resizew=178)
(1)证明:
平面
;
(2)若直线
与平面
所成角的正弦值为
,求
.
![](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/c45fbffb9e2c7fa7c5006cde8da0cabe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21009ca3f075e52d5ead1a1c1607b387.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00430f53b989f7137333e10e27b61047.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8114bce49be13ddd7bcf685a5239f650.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/72c31fb0-85a9-48ec-a152-67dac6ebd895.png?resizew=178)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06222ee533c2484ab25321a6abbf98cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4d781525777c7b5284dffc70b2a28a.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0fa3254460ecbacecb3e57c5dce227f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f429614954d7a6d1e5f6df901b4d5d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
您最近一年使用:0次
解题方法
2 . 已知三棱锥
中,
平面
,点
在
上,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/2483fa30-906b-4881-a3a6-0c2512b40717.png?resizew=139)
(1)求证:平面
平面
;
(2)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d86df06485ffebdbec5a01f2918b81ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/733dd263bcea8367ee0757c38aba2aae.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/2483fa30-906b-4881-a3a6-0c2512b40717.png?resizew=139)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf6dc837ae85207789b94d109c5c2eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab6d47edbcc2ae6efcfd7f28e401e3e9.png)
您最近一年使用:0次
解题方法
3 . 如图,在四棱锥
中,
底面
,底面
为矩形,
是线段
的中点,
是线段
上一点(不与
两点重合),且
.若直线
与
所成角的余弦值是
,则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/1be044ea-a8ff-45d3-8db3-5814a2eeac9f.png?resizew=136)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31a18b6366d777d555a32ce98a11773f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfaa712e64750e3e2843bae68ebad6d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5dc5c7845637b698a94c7bc85c6c60f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8f4dc8678e0764d25627a8c63782477.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/9/1be044ea-a8ff-45d3-8db3-5814a2eeac9f.png?resizew=136)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-11-06更新
|
418次组卷
|
6卷引用:河南省湘豫名校联考2022- 2023学年高二上学期阶段考试(一) 数学(理)试题
河南省湘豫名校联考2022- 2023学年高二上学期阶段考试(一) 数学(理)试题河南省湘豫名校联考2022- 2023学年高二上学期阶段考试(一) 数学(文)试题(已下线)6.3.3空间角的计算(1)(已下线)第11讲 用空间向量研究距离、夹角问题11种常见考法归类-【暑假自学课】2023年新高二数学暑假精品课(人教A版2019选择性必修第一册)(已下线)专题 1.2空间向量:求距离与角度13种题型归类(2)(已下线)专题03 空间向量的应用压轴题(5类题型+过关检测)-【常考压轴题】2023-2024学年高二数学上学期压轴题攻略(人教A版2019选择性必修第一册)
解题方法
4 . 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
5 . 平面
的一个法向量为
,平面
的一个法向量为
,则平面
与平面
夹角的正切值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cb5eff93e210b1a562a1bf49608e1a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08d62b478ff5ebd29d082331326723b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
6 . 如图,在正三棱柱
中,
,D为AB上一点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/3/e2bf70dc-8be1-40c1-be02-d2ef9d4896b0.png?resizew=152)
(1)确定D的位置使
平面
;
(2)对于(1)中D的位置,求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3ad459759b3a4ffa2550cddc9c6b0e2.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/3/e2bf70dc-8be1-40c1-be02-d2ef9d4896b0.png?resizew=152)
(1)确定D的位置使
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f5830646a912c3a916beac4f88c116b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74bca84ad86c648d3bb20c8909c8da3f.png)
(2)对于(1)中D的位置,求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6cc1c04946340198af69170d4ebd4b42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74bca84ad86c648d3bb20c8909c8da3f.png)
您最近一年使用:0次
2022-11-02更新
|
262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
解题方法
7 . 如图,在棱长为3的正方体
中,点P,Q,R分别在AB,
,
上,且
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/3/fac28370-2907-4009-a983-deb276a575c4.png?resizew=134)
(1)求直线
与平面
所成角的正弦值;
(2)证明:
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e3334853138fb74687d66b1e45f2fd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a21ca2cc5649952ceac291acc79174a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f0eaef73747b2ac82a9851e21de0e75.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/3/fac28370-2907-4009-a983-deb276a575c4.png?resizew=134)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08361173b096d18b33210a955e109f42.png)
(2)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f46af172b1b5974b7a3165b1a3042003.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08361173b096d18b33210a955e109f42.png)
您最近一年使用:0次
2022-11-02更新
|
122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
解题方法
8 . 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
9 . 在四棱锥
中,
平面
,底面
为矩形,
.若
边上有且只有一个点
,使得
,此时二面角
的余弦值为( )
![](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://staticzujuan.xkw.com/quesimg/Upload/formula/ced3d3dd6af84fb052fc7281d707853e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a51f62c318219789a834d9616bd553f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6ea5de1a95497e2818198d0c2a57669.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2022-10-31更新
|
986次组卷
|
11卷引用:河南省洛阳新学道高级中学2022-2023学年高二上学期第一次月考数学试题
河南省洛阳新学道高级中学2022-2023学年高二上学期第一次月考数学试题山西省山西大学附属中学校2022-2023学年高二上学期10月(第二次模块诊断测试)数学试题广东省广州西关外语学校与广州理工实验学校联盟2022-2023学年高二上学期期中数学试题(已下线)专题1.12 空间向量与立体几何全章综合测试卷-基础篇-2022-2023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)江西省南昌市第二中学2016-2017学年高二下学期期中考试数学(理)试题贵州省兴义市第八中学2017-2018学年高二上学期期中考试数学(理)试题安徽省滁州市定远县育才学校2019-2020学年高二(实验班)上学期第三次月考数学(理)试题安徽省滁州市定远县育才学校2020-2021学年高二上学期第二次月考数学(理)试题江苏省常州高级中学2021-2022学年高一下学期期末数学试题(已下线)模块三 专题2 小题进阶提升练( 1 )(苏教版高二)(已下线)专题03 空间向量的应用压轴题(5类题型+过关检测)-【常考压轴题】2023-2024学年高二数学上学期压轴题攻略(人教A版2019选择性必修第一册)
名校
10 . 如图,点
在
内,
是三棱锥
的高,且
.
是边长为
的正三角形,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/b8d41381-a60e-45ff-900a-9d0b0ebf9d84.png?resizew=256)
(1)求点
到平面
的距离;
(2)点
是棱
上的一点(不含端点),求平面
与平面
夹角余弦值的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/377b5f7197e5bd1afeea4d931307956a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d350d6a53f0de46567e2bd5cd5147a85.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/1/b8d41381-a60e-45ff-900a-9d0b0ebf9d84.png?resizew=256)
(1)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c96bc9a285172c48e4726ee6492670ef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
您最近一年使用:0次
2022-10-29更新
|
655次组卷
|
7卷引用:河南省豫南名校2022-2023学年高二上学期期中联考数学试题