名校
1 . 如图,正方体
的棱长为3,点E、F,G分别在棱
,
,
上,满足
,
,记平面
与平面
的交线为l,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b94ce22f30a8de2af135de3c89403aff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fbafedc202bd0d86c4dfdece9f8f4fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a696a182fff038a86b2bbe8ca099442.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcd966daca9f4c09e7e6c0d973c6558d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e19c660ddaf5b1acd5bef3fa936793d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe8a84ca3a13f82aff1a022edc66065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb04914c4e8fb3483da44c67fe1809f.png)
A.![]() ![]() ![]() |
B.平面![]() ![]() |
C.![]() ![]() ![]() |
D.![]() ![]() ![]() |
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名校
解题方法
2 . 如图,在四面体
中,
分别为
的中点.
平面
;
(2)求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f90e4de16f61a0c16b19b8f3a7d7d75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5dc62e10004e73908091338362917da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17580410bf63dba4fe164265afaac4cc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae8768996ca9a0f2c5d9a19abbd54df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10fc7991ea17d54ff5f4445ac5699463.png)
您最近一年使用:0次
2024-06-11更新
|
393次组卷
|
2卷引用:湖北省黄冈中学2024届高三第四次模拟考试(5月)数学试卷
名校
解题方法
3 . 如图,
为圆锥的顶点,
是圆锥底面的圆心,
为底面直径,
为底面圆
的内接正三角形,且边长为
,点
在母线
上,且
.![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7287402bc333c819f838ef9234f77269.png)
平面
;
(2)若点
为线段
上的动点.当直线
与平面
所成角的正弦值最大时,求平面
与平面
所成角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab2a2834d80ff574e79eae8ca8d4e94f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b61544f856bd6199445bddd9e3ccbc4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7287402bc333c819f838ef9234f77269.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15a424b50eaeafa6f302ffd95476cb86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9af29254fe60a392c249c5791279e9c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
您最近一年使用:0次
名校
4 . 如图,在三棱柱
中,侧面
底面
,
,点
为线段
的中点.![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
平面
;
(2)若
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61cdaadeae37736a1e6dd93fa1fe712f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8007565eb8fbda18585b6e5ace884ddb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7b5e6eba51b4933b7886431bea7f52b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bba99277e38f8d9f817a9d7db8198219.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6798bf9d72d6d23920a7e30104af2f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12390d01797cb16381bec2e088d792ab.png)
您最近一年使用:0次
2024-04-22更新
|
1891次组卷
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4卷引用:湖北省黄冈市浠水县第一中学2024届高三下学期第四次高考模拟数学试题
湖北省黄冈市浠水县第一中学2024届高三下学期第四次高考模拟数学试题2024届辽宁省部分重点中学协作体高三下学期4月三模数学试卷(已下线)6.4 空间向量与立体几何(高考真题素材之十年高考)2江西省吉安市第一中学2024届高三三模数学试题
名校
5 . 如图,在三棱柱
中,
,
,四边形
是菱形.
;
(2)若
,求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b09257183a9578be6adf9ad4310e4000.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b65798afbc7efaed6d65d0719c3c391.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0af487efe25c906740c70b6616e4fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dfb64c679bf4a62e5ee092d8885fc09.png)
您最近一年使用:0次
2024-04-13更新
|
1298次组卷
|
6卷引用:湖北省黄冈市浠水县第一中学2024届高三下学期第三次高考模拟数学试题
名校
6 . 在四棱锥
中,已知
,
,
,
,
,
是线段
上的点.
底面
;
(2)是否存在点
使得
与平面
所成角的余弦值为
?若存在,求出
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/251dc163e6db632d7b0ed3ce94f43aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d60964e720188e325eb18c9528b1fa95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fd3c2e2199cd4565c05b949bc21fc37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c85aeab3aeaf4367b711da8cde2e8bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2899e607479d8d1c47d954ae9ebb7144.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5f1897a7e856b42f8cee0f286ad913d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)是否存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca48c18021e7be4bbb3e95576e1c1b5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe2c533dbc23a34518f72f3cb14f330.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fb4402e082c123111c12fc6cc3acbc9.png)
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2024-03-06更新
|
3211次组卷
|
8卷引用:湖北省黄冈市浠水县第一中学2024届高三下学期第二次模拟考试数学试题
湖北省黄冈市浠水县第一中学2024届高三下学期第二次模拟考试数学试题四川省成都市第七中学2024届高三下学期二诊模拟考试理科数学试卷(已下线)第3讲:立体几何中的探究问题【练】河南省漯河市高级中学2024届高三下学期3月检测数学试题(一)(已下线)2024年高考数学全真模拟卷08(新题型地区专用)福建省福州格致中学2023-2024学年高二下学期3月限时训练(月考)数学试卷(已下线)模块3 第3套 全真模拟篇(已下线)信息必刷卷02(北京专用)
名校
7 . 已知:斜三棱柱中,
,
与面
所成角正切值为
,
,
,点
为棱
的中点,且点
向平面
所作投影在
内.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d7aa38ad18805583a59dfaaa53b294a.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2b6797e834bb430abf574c2f2b3c107.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ac09dc1ca2cdd7aef28c218763d3e4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be813fd21d15c6349f03ac3340b6402f.png)
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2024-02-21更新
|
2685次组卷
|
4卷引用:湖北省黄冈市浠水县第一中学2024届高三下学期第一次高考模拟数学试题
湖北省黄冈市浠水县第一中学2024届高三下学期第一次高考模拟数学试题黑龙江省“六校联盟”2023-2024学年高三下学期联合性适应测试数学试题(已下线)最新模拟重组精华卷1-模块一 各地期末考试精选汇编(已下线)高考数学冲刺押题卷02(2024新题型)
名校
8 . 如图,在三棱柱
中,直线
平面
,平面
平面
.
;
(2)若
,在棱
上是否存在一点
,使二面角
的余弦值为
?若存在,求
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06ad7c180d6d084ecb25f23cb6fe9b10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0671b4776e142e17a79af5b3f0378ef7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1de5964353beb55c5058b2a431eecaf.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9008767d531e72e94dee8452aedca97a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c23129f02a89e68ca40c08b32563475.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a69d166677557cadb3da32b4a7e152e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55abe7008585043c035ade44c9b54398.png)
您最近一年使用:0次
2024-01-03更新
|
3480次组卷
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18卷引用:湖北省黄冈市浠水县第一中学2024届高三上学期期末数学试题
湖北省黄冈市浠水县第一中学2024届高三上学期期末数学试题四川省遂宁市2024届高三一模数学(理)试题四川省资阳市2024届高三二模数学(理)试题四川省广安市2024届高三一模数学(理)试题江苏省镇江市第一中学2024届高三上学期1月学情检测调研数学试题江西省赣州市南康中学2024届高三上学期七省联考考前数学猜题卷(六)(已下线)专题13 空间向量的应用10种常见考法归类(4)(已下线)高二数学开学摸底考 01(人教A版,范围:空间向量与立体几何+直线与圆+圆锥曲线+数列)-2023-2024学年高二数学下学期开学摸底考试卷陕西省西安中学2024届高三模拟考试(一)数学(理科)试题河北省石家庄市第二中学2023-2024学年高二上学期期末模拟一数学试题河南省郑州市宇华实验学校2024届高三下学期开学摸底考试数学试题四川省宜宾市第六中学校2024届高三上学期期末数学(理)试题(已下线)专题05 空间向量与立体几何(分层练)(四大题型+21道精选真题)(已下线)2024年高考数学全真模拟卷06(新题型地区专用)(已下线)重难点12 立体几何必考经典解答题全归类【九大题型】四川省雅安市2024届高三一模数学(理)试题四川省眉山市2024届高三一模数学(理)试题陕西省西安市陕西师范大学附属中学2023-2024学年高三第六次模考数学(理科)试题
名校
9 . 已知四棱锥
,底面
为平行四边形,
,
,
,
.
平面
;
(2)若
,求二面角
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/81f17680a23635f823b7dc446e4f3b0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efa3a6cbbb3f384c7cb91ec88c072ab2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63f286b7a8d1b81bb0a7441db0233b69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfa8dfca7fc8d02285b724979e9f20fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c383691e8d740830a865b12d66f7633.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/290a37874cd284fb1a8c864769ce50c9.png)
您最近一年使用:0次
2023-12-17更新
|
1163次组卷
|
3卷引用:湖北省黄冈八模2024届高三数学模拟测试卷(二)
名校
解题方法
10 . 如图,在四棱锥
中,底面ABCD为正方形,
平面ABCD,
,
为线段PB的中点,F为线段BC上的动点.
(1)求证:平面
平面PBC;
(2)求平面AEF与平面PDC夹角的最小值.
![](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/f83a04565a8ebaa111894b724b0ba266.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/25/ba23ea5f-b966-4fe9-a890-6bd032100d2a.png?resizew=133)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6501f1c913a4ef64957a2f01ab5baa15.png)
(2)求平面AEF与平面PDC夹角的最小值.
您最近一年使用:0次
2023-05-25更新
|
1732次组卷
|
6卷引用:湖北省黄冈市黄梅县育才高级中学2023-2024学年高二下学期3月月考数学试题