1 . 如图,在直三棱柱
中,
,E为
的中点,平面
平面
.
;
(2)若
的面积为
,试判断在线段
上是否存在点D,使得二面角
的大小为
.若存在,求出
的值;若不存在,说明理由.
![](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/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21dee56b9f36ba8f76fe67b76383636b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e3f5dc11efe60b4fd9a13b1d6b83842.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e827641feb4179bca7033ed8760bf728.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95bacae35b6e16a0a33c2bdc6bc07df7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f1854ba6cc92481d7a616bd2788a47e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0211da37e92f915e781691296578ba0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f633632c5bb6c44a504c1bd5984ff5e2.png)
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2023-07-25更新
|
879次组卷
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4卷引用:福建省莆田锦江中学2024届高三上学期第一次月考数学试题
福建省莆田锦江中学2024届高三上学期第一次月考数学试题福建省龙岩市2022-2023学年高二下学期期末教学质量检查数学试题(已下线)专题05用空间向量研究距离、夹角问题(2个知识点6种题型1个易错点1种高考考法)(3)【人教A版(2019)】专题02立体几何与空间向量(第二部分)-高二下学期名校期末好题汇编
解题方法
2 . 在四棱锥
中,
平面
,点
分别为
的中点.
(1)求证:
平面
;
(2)过点
的平面交
于点
,求
的值.
![](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/7a2cbc1b4bb6b8e4ec6e50f2982749ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b094411c562930ff2d67b582cfd48cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f805fba552962d3389267f0ddf7fcf87.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/20/ed65b6ab-70d9-4b3e-bbb0-483664f0a5d7.png?resizew=166)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
(2)过点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af26591bca7ddc44b3d76d5829379ed3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50cafe199913787a939fe9e100924023.png)
您最近一年使用:0次
3 . 如图,
两两互相垂直,三棱锥
是正四面体,则下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/766565857d28617cc4c2a26ecf76ec24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42020cfacd62b300cad053981bab9e0b.png)
A.二面角![]() ![]() |
B.![]() |
C.若![]() ![]() ![]() |
D.三棱锥![]() ![]() |
您最近一年使用:0次
4 . 已知
是两条不同的直线,
是两个不重合的平面,则下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() |
您最近一年使用:0次
2023-07-17更新
|
331次组卷
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3卷引用:福建省莆田市2022-2023学年高一下学期期末质量监测数学试题
福建省莆田市2022-2023学年高一下学期期末质量监测数学试题新疆维吾尔自治区喀什第二中学2023-2024学年高二上学期开学测试数学试题(已下线)8.6.2 直线与平面垂直(第1课时)直线与平面垂直的判定(分层作业)-【上好课】
5 . 如图,在四棱锥
中,
,
,
,
为
的中点,
与
均为等边三角形,
与
相交于
点.
(1)证明:
平面
;
(2)求直线
与平面
所成的角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ac535972cd06aad5b9c2c5da7b816a4.png)
![](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/55a675310c8ba418e5a59beb7317e21e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/177678001b2ccde1db8f57fa5e017002.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/21/30abda38-1a9f-44bc-9e99-715ed8192de6.png?resizew=280)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e126c16032892966489053f44b9048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc5adb5eb60ae4435a12d93854066298.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
名校
6 . 如图,在三棱柱
中,所有棱长均为2,
,
.
(1)证明:平面
平面
.
(2)求平面
与平面
的夹角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f70d708336d4f15e7fca0b26acb353b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf1cc9995c3846117daa8cf10aadf22.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/24/f4f3afaf-416d-4393-ac99-786aea666eb5.png?resizew=208)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df00cdf77ed39ca5a0b305861a693142.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/320494fe2212cd82b5de536f0be157a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
您最近一年使用:0次
2023-06-22更新
|
515次组卷
|
2卷引用:福建省莆田第一中学2023-2024学年高二下学期期初考试数学试卷
名校
解题方法
7 . 如图,在三棱柱
中,
底面
,
,
,
,
在上底面
(包括边界)上运动,则三棱锥
的外接球体积的最大值为( )
![](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/92535536bd3c2761724fd058427f95a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7ad3a578f403b9e6b97fa2dc955fc11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/25/e805789c-ce90-4170-9cf3-6523fd91e0e7.png?resizew=121)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2023-06-22更新
|
674次组卷
|
3卷引用:福建省莆田市第二十五中学2024届高三上学期返校考试数学试题
名校
8 . 如图
,菱形
的边长为
,
,将
沿
向上翻折,得到如图
所示得三棱锥
.
(1)证明:
;
(2)若
,在线段
上是否存在点
,使得平面
与平面
所成角的余弦值为
?若存在,求出
;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff5a86745bfe1dfe7bc2683811210330.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeb4c6e9a723aa843e6ba62d7c1a3a6c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/21/017f48fd-7480-446f-8191-d4d29f2274d8.png?resizew=258)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b219a74a1ce5a2b22c36d8de1e21ff91.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f89d82e9eb9b5d65306aac5de81460f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d254a2f50de801bba567dc4f04a9d87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3aace91caec728e174daec29a3568ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
您最近一年使用:0次
2023-06-21更新
|
1336次组卷
|
7卷引用:福建省莆田第四中学2023-2024学年高二上学期期中考试数学试卷
福建省莆田第四中学2023-2024学年高二上学期期中考试数学试卷广东省佛山市禅城区2023届高三模拟预测(二)数学试题(已下线)1.4 空间向量应用(精练)-2023-2024学年高二数学《一隅三反》系列(人教A版2019选择性必修第一册)(已下线)专题1 立体几何与解三角形(已下线)第七章 立体几何与空间向量 第六节 利用空间向量求空间角与距离 讲(已下线)专题06 二面角4种常见考法归类 - 【考点通关】2023-2024学年高二数学高频考点与解题策略(人教B版2019选择性必修第一册)(已下线)专题3 翻折变换 模型转化 练
9 . 如图,在三棱锥
中,
,
,
,
.
(1)证明:
平面
;
(2)求直线
与平面
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32e4c39ba72d14560e283ad7f75353a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be790e6e8af0fa54f0abbb3f81ce43e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8778acce852b43deb7b7930a71595c20.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/1/3aac780c-64df-450e-aa4d-fa2eda550366.png?resizew=127)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45fbffb9e2c7fa7c5006cde8da0cabe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
您最近一年使用:0次
名校
解题方法
10 . 如图,已知正方体
的棱长为
,
为底面
内(包括边界)的动点,则下列结论正确的是( ).
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/19/01af4228-9c41-42d3-8b02-4119936a05a5.png?resizew=162)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.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/2023/5/19/01af4228-9c41-42d3-8b02-4119936a05a5.png?resizew=162)
A.三棱锥![]() |
B.存在点![]() ![]() |
C.若![]() ![]() ![]() ![]() |
D.若点![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次
2023-05-18更新
|
1754次组卷
|
7卷引用:福建省莆田第四中学2024届高三上学期第一次月考数学试题
福建省莆田第四中学2024届高三上学期第一次月考数学试题湖北省武汉市武昌区2023届高三下学期5月质量检测数学试题湖南省长沙市长郡中学2023届高三高考前保温卷(1)数学试题福建省宁德市福鼎第六中学2022-2023学年高二下学期6月月考数学试题新疆生产建设兵团第三师图木舒克市第一中学2024届高三上学期11月月考数学试题(已下线)专题01 空间向量与立体几何(4)(已下线)第二章 立体几何中的计算 专题六 空间定值问题 微点5 立体几何中的定形定值和定位定值问题【培优版】