解题方法
1 . 如图,在三棱柱.
中,
,
线段
的中点,且
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be0dad269cdb9689629e8ffec9e4c4df.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/6/459b16f5-8f99-4a51-877e-bf39a008631f.png?resizew=192)
(1)求证:平面
平面
;
(2)若
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ede6a60cad0e0b58e1549fda6e085719.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6620ccc560a532e820cd1dd95f9c9d90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a9c6a736e6eac98a676fa3232db5a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e8778aee92f0f2bf7c676e56625f00d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be0dad269cdb9689629e8ffec9e4c4df.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/6/459b16f5-8f99-4a51-877e-bf39a008631f.png?resizew=192)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0ce879dd2b2484c6cba16bca7cff9ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aab7f12f85c4f79214ab856d1e6d5c61.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72998bd946dc9aa1af0c5738a7b2be0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0484b4dd4a57b01b18ec3d79675be775.png)
您最近一年使用:0次
2 . 如图,四棱锥
中,侧面
为等边三角形,且平面
底面
,
,
=
=
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/29/ff55908c-f49f-46c7-ae4e-b2b2e545ccd2.png?resizew=229)
(1)证明:
;
(2)点
在棱
上,且
=
,求直线
与平面
的夹角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d57feccdd2fc903e4f555820e72693b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2947ca8e0cdbeb4aab80ce9e7b63ba98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d39b8d91afc34e4a9b0fdbb6bafb9087.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2ff7caec4fdd8fb54a3ffbff9692414.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/6/29/ff55908c-f49f-46c7-ae4e-b2b2e545ccd2.png?resizew=229)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/545e18836bc7fee22f8f813a6f525d93.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db54223bb3fc2fe2497213a4d1f94827.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/438f34bc8b04e8c494b91306ac6fe352.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
您最近一年使用:0次
2022-06-27更新
|
718次组卷
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4卷引用:山西省运城市景胜中学2021-2022学年高一下学期6月月考数学(理)试题
山西省运城市景胜中学2021-2022学年高一下学期6月月考数学(理)试题(已下线)知识点 空间向量及其运算 易错点2 向量的夹角转化为线面角不清致错(已下线)7.5 空间向量求空间角(精练)第一章 空间向量与立体几何 讲核心03
名校
解题方法
3 . 如图,四棱锥
中,底面
为平行四边形,且
,
,
,若二面角
为
,则
与平面
所成角的正弦值为__________ .
![](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/e6ad1b58fb91436d93b79df214b0ca23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f5c40f909fae89547423350cd87398d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c911b404bbb8f8d5f1470585fa31ad97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/260200d547998bcac50a4a491382e7f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://img.xkw.com/dksih/QBM/2022/5/20/2983530540892160/2996090784350208/STEM/26cecfc8-cc1d-4b5d-8e40-8d790678b1dd.png?resizew=165)
您最近一年使用:0次
2022-06-07更新
|
2081次组卷
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8卷引用:山西省运城市景胜中学2022-2023学年高二上学期9月月考数学(B)试题
山西省运城市景胜中学2022-2023学年高二上学期9月月考数学(B)试题福建省三明市四地四校2021-2022学年高一下学期期中联考数学试题辽宁省丹东市凤城市第一中学2021-2022学年高一下学期6月月考数学试题(已下线)专题1.6 空间向量与立体几何(能力提升卷)(已下线)第09讲 立体几何与空间向量 章节总结 (讲)-1(已下线)专题15 立体几何(讲义)-2(已下线)核心考点08空间直线、平面的垂直-【满分全攻略】2022-2023学年高一数学下学期核心考点+重难点讲练与测试(人教A版2019必修第二册)(已下线)2023-2024学年高二上学期数学期末预测基础卷(人教A版2019)
名校
4 . 如图,四棱柱
中,平面
平面
,底面
为菱形,
与
交于点O,
.
![](https://img.xkw.com/dksih/QBM/2022/6/2/2992613741322240/2995556340269056/STEM/33c76a39-6559-4d7d-9792-b19f7a924fa9.png?resizew=276)
(1)求证:
平面
;
(2)线段
上是否存在点F,使得
与平面
所成角的正弦值是
?若存在,求出
;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91ba5715a95b8de18c637c12c3d30d7d.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f435b981d18b1ba02cb78ff404496c29.png)
![](https://img.xkw.com/dksih/QBM/2022/6/2/2992613741322240/2995556340269056/STEM/33c76a39-6559-4d7d-9792-b19f7a924fa9.png?resizew=276)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c1ad2917b716db41c03e670f77d411d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cae70b8a9d2d2e96dea62c00ced04b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/239198e40085b7dcffbe747c9c265a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b2a698891d42c70b597f0da4f215f09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a3fd10496f99992b2b6de9f4f6e34ed.png)
您最近一年使用:0次
2022-06-06更新
|
761次组卷
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8卷引用:山西省运城市2022-2023学年高二上学期期末数学试题
名校
5 . 如图,在四棱锥
中,底面
是矩形. ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c2d74e9b74630dd4c19fe648fb933ff.png)
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/10/88a146a3-883c-499d-a84e-f8778b758af7.png?resizew=206)
(1)证明:
平面
;
(2)求直线
与平面
所成角的正弦值.
![](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/5c2d74e9b74630dd4c19fe648fb933ff.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/2022/7/10/88a146a3-883c-499d-a84e-f8778b758af7.png?resizew=206)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaee8f228ff24e7c89879bb5b999cf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
2022-05-29更新
|
268次组卷
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9卷引用:山西省运城市教育发展联盟2021-2022学年高二上学期10月月考数学试题
山西省运城市教育发展联盟2021-2022学年高二上学期10月月考数学试题山西省运城市景胜中学2021-2022学年高二下学期5月月考数学试题广东省广州市三中、四中、南武、培正中学2021-2022学年高二上学期期中数学试题广东省广州市(广雅,执信,省实,二中)四校联考2021-2022学年高二上学期期中数学试题辽宁省辽东南协作体2021-2022学年高二上学期期中考试数学(B卷)试题辽宁省渤海大学附属高级中学2021-2022学年高二上学期第二次月考数学试题甘肃省民勤县第一中学2021-2022学年高二上学期期末考试数学(理)试题湖北省恩施州巴东县第三高级中学2022-2023学年高二上学期第一次月考数学试题广东省东莞市光明中学2022-2023学年高二上学期期中数学试题
6 . 如图,在四棱锥
中,底面
为正方形,平面
平面
,点
为线段
中点,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/56fc9e84-4252-4650-b1c8-f84371f4897d.png?resizew=212)
(1)证明:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
平面
;
(2)求二面角
的正切值.
![](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/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91847defdb470381632f355d53ef24fe.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/56fc9e84-4252-4650-b1c8-f84371f4897d.png?resizew=212)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb304d905125170bebfada27e7ed8960.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/daffe333e60992bb4590370b79b806d5.png)
您最近一年使用:0次
2022-05-27更新
|
485次组卷
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3卷引用:山西省运城市2021~2022学年高一下学期5月阶段性检测数学试题
2022·全国·模拟预测
解题方法
7 . 如图所示,四棱锥S-ABCD的底面为等腰梯形,
,二面角
为直二面角.
![](https://img.xkw.com/dksih/QBM/2022/5/17/2981295307956224/2981357128957952/STEM/c7b58a85-5755-432f-af55-4dde281d82dc.png?resizew=202)
(1)求证:
;
(2)若
为等边三角形,当点M在棱BC上运动时,记直线SM与平面SAD所成角为
,当
最小时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a2a57e79c8b0b66f9af667b528c5db5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74a6e2d74d5dc94f157b76b605ced402.png)
![](https://img.xkw.com/dksih/QBM/2022/5/17/2981295307956224/2981357128957952/STEM/c7b58a85-5755-432f-af55-4dde281d82dc.png?resizew=202)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aad35cb59338b67fbf45f1f744d7c841.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7853371cf04731c81a7a5dfd7a53b34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aefd06c239145a2b6ae87a955aa51414.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9139251b27b393fcb37577828bbf53bf.png)
您最近一年使用:0次
解题方法
8 . 如图,四棱柱
中,底面
为平行四边形,侧面
为矩形,
.
![](https://img.xkw.com/dksih/QBM/2022/5/14/2979357017235456/2980770516598784/STEM/84d0affa-90e2-488a-9dbf-13ddf3292b96.png?resizew=213)
(1)证明:平面
平面
;
(2)求直线
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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ebb05874eb3353d754af24c9974273e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/636989d3eab1e5777afdc56011390384.png)
![](https://img.xkw.com/dksih/QBM/2022/5/14/2979357017235456/2980770516598784/STEM/84d0affa-90e2-488a-9dbf-13ddf3292b96.png?resizew=213)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf9a6db3571fa57bfa2d5e4d44c51b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2bf9ef324f1289e205e29fed105c38e.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e539f26ed5e0b20ff7220559324869a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a211ad5a06b505b8365a62c1946f3cb7.png)
您最近一年使用:0次
9 . 已知直三棱柱中
中,
为正三角形,E为AB的中点,二面角
的大小为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/19/ac3c4878-ba99-4dfc-a52a-6e6576a579e1.png?resizew=268)
(1)求证:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
平面
;
(2)求直线BC与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e32f701757a5bf0c41cc3a7745fdd2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/19/ac3c4878-ba99-4dfc-a52a-6e6576a579e1.png?resizew=268)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f233b375753611ffa7a93c2c12ef5e28.png)
(2)求直线BC与平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f233b375753611ffa7a93c2c12ef5e28.png)
您最近一年使用:0次
2022-05-11更新
|
932次组卷
|
3卷引用:山西省运城市稷山中学2023届高三上学期11月考(重组六)数学试题
解题方法
10 . 在正方体
中,点P是底面
的中心,则直线
与
所成角的余弦值为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6655c413f509068d30b165f9d92bdba0.png)
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