名校
1 . 如图,在四棱锥P﹣ABCD中,底面ABCD为梯形,DC=3AB=3,AD=3,AB∥CD,CD⊥AD,平面PCD⊥平面ABCD,E为棱PC上的点,且EC=2PE.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/bdc1f794-f2ca-4980-a8ec-36d943d66a97.png?resizew=184)
(1)求证:BE∥平面PAD;
(2)若PD=2,二面角P﹣AD﹣C为60°,求平面APB与平面PBC的夹角的余弦值.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/14/bdc1f794-f2ca-4980-a8ec-36d943d66a97.png?resizew=184)
(1)求证:BE∥平面PAD;
(2)若PD=2,二面角P﹣AD﹣C为60°,求平面APB与平面PBC的夹角的余弦值.
您最近一年使用:0次
2024-01-15更新
|
649次组卷
|
2卷引用:安徽省合肥市一六八中学2024届高三上学期期末模拟数学试题
2 . 如图,在直三棱柱
中,
分别为线段
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/6bb986a4-2eb6-4d31-9a39-65675a0b9918.png?resizew=97)
(1)求证:
平面
;
(2)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/6c2d3d760a8e137fe9757ad94931f4dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/17/6bb986a4-2eb6-4d31-9a39-65675a0b9918.png?resizew=97)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7a407b262c22419f73396170ecdc849.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6261790c66cc71ee3898afabad0c09f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99b16cff607cdc2d69afc70dc778acbb.png)
您最近一年使用:0次
名校
3 . 如图,在多面体
中,四边形
是矩形,
,
平面
,
为
的中点,
,
.
(1)证明:
平面
;
(2)求平面
与平面
的夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/955a828ae5d627d57854439c4e467d23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d9a8181f7a7fe7f3fac872ce9534f15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5845ccc0d735dc14c92a8926d9b1def6.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/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9314a9e59beed972e6c717904b6554d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29e240a6378adf6d23ebf9cc710c9bd6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/6/de7428aa-06e3-419e-88c1-45224a197e13.png?resizew=150)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/975c6d9f054b68d92eb8df2498791386.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db3ef97d64e58d311019b70fe5e2cc0d.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e2f7554a52815bfa0f4d75221ba7397.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62a52848aff08399a36f217356007a4b.png)
您最近一年使用:0次
名校
4 . 如图(1),在边长为4的菱形
中,
,点
是边
的中点,连
交对角线
于点
,将
沿对角线
折起得到如图(2)所示的三棱锥
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/4/e6415891-80c3-4682-8739-1c0f1afad091.png?resizew=323)
(1)点
是边
上一点且
,连
,求证:
平面
;
(2)若二面角
的大小为
,求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bb8fb552b9e21dbaba74d11aa747790.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.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/08a9ec3b527947cad9caa4537e0cb7e7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/4/e6415891-80c3-4682-8739-1c0f1afad091.png?resizew=323)
(1)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/340f68f1106c820debe1f92a266ed35e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bdb8aebdfa202f12d8c43e42c06185b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/02a7ba7cd0c654714c967a900513ba16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f785147690f83dcee0a0bc6c327e75a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb5fa459d6c8ae34b54bb973c6f2aea3.png)
您最近一年使用:0次
名校
5 . 如图,三棱柱
的底面是等边三角形,
,
,D,E,F分别为
,
,
的中点.
上找一点
,使
平面
,并说明理由;
(2)若平面
平面
,求平面
与平面
所成二面角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4195ed4a942092a90895d5e70e713a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a9f99fb3252a4b3b7a62e8a675ddce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f60d66204e1abc17bd01749f187f8050.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/657dffbd3623b705f871878fbd9df57e.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce04b35c265cc9c48b60204bd2f718ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/657dffbd3623b705f871878fbd9df57e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
您最近一年使用:0次
2023-10-30更新
|
4163次组卷
|
10卷引用:“七省联考”2024届高三考前猜想数学试题
“七省联考”2024届高三考前猜想数学试题云南省昆明市第一中学2024届高三第三次双基检测数学试题(已下线)专题09 立体几何(5大易错点分析+解题模板+举一反三+易错题通关)-2河南省商丘市虞城县第一高级中学2024届高三上学期第三次月考数学试题河南省漯河市2024届高三上学期期末质量监测数学试题(已下线)专题7.3 空间角与空间中的距离问题【九大题型】(已下线)第二章 立体几何中的计算 专题一 空间角 微点9 二面角大小的计算(四)【培优版】(已下线)信息必刷卷05(江苏专用,2024新题型)山东省济南市2023-2024学年高二上学期期末质量检测模拟数学试题江西省丰城中学2023-2024学年高二上学期1月期末数学试题
名校
6 . 如图,在五面体
中,四边形
为正方形,
为正三角形,
,
.
(1)若平面
平面
,证明:
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea1e3a43d0fa18f6c0888ba804d5b329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a675310c8ba418e5a59beb7317e21e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91f0f9487303d04e6914b29ae805a0f4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/2/474e97c7-bd61-4d32-94d9-a868ddccd307.png?resizew=185)
(1)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1084a42a7b7600ac9651a023de6d3401.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebae74545340ce6971f437d129e9c659.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d09642d9d26684a580d2727b46728422.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecc407e2b3e9da16eba881fd7a83845a.png)
您最近一年使用:0次
名校
7 . 如图,圆台
的轴截面为等腰梯形
,
,
为下底面圆周上异于
,
的点.
(1)点
为线段
的中点,证明:直线
平面
;
(2)若四棱锥
的体积为
,求直线
与平面
夹角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e65ac334119ccd6204402a7aba29a55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31e53b212640dadf751ef7f65a78a209.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf58eb18155abf2280c2bae876bc7722.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/2/5c12aab3-61c8-449e-9101-64efed52b8ec.png?resizew=190)
(1)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ed5e4634dce8ce3854495597fe8160b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0ef671ff46a372d5351b8c2f9eb26b48.png)
(2)若四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29a0c82028e1259f300facd32775a15e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23e2c643dd6501b20c46c5c6527a2634.png)
您最近一年使用:0次
2023高三·全国·专题练习
名校
8 . 如图,在几何体
中,四边形
是矩形,
平面
,
,
,
,
分别是线段
,
的中点.
平面
;
(2)求平面
与平面
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9a814b70236a108be5d6e7ff271fe92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4fb90434b6da93bdc6590f769ef118b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57f3b062f380db4306af808f37cada22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c27a8fd3bf5b89a16dbbe1a8230653c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9a32bd7a1b78b5a0ec562c4025aea8c.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9a814b70236a108be5d6e7ff271fe92.png)
您最近一年使用:0次
2023-07-24更新
|
447次组卷
|
6卷引用:安徽省滁州市定远县民族中学2023届高三上学期期末数学试题
安徽省滁州市定远县民族中学2023届高三上学期期末数学试题(已下线)专题2 求二面角的夹角(1)(已下线)模块六 立体几何 大招19 投影法求二面角(已下线)第32题 空间角求法迭出,向量法更胜一筹(优质好题一题多解)(已下线)专题23 立体几何解答题(理科)-2河南省许昌市建安区第一高级中学2023-2024学年高二上学期10月月考数学试题
名校
解题方法
9 . 如图,在正三棱柱
中,点
在棱
上,且
.
(1)求证:
平面
;
(2)若正三棱柱
的底面边长为
,二面角
的大小为
,求直线
到平面
的距离.
![](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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbd9875a400f70831eeaa6c71e82afdc.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/14/a374965b-e258-4082-9d5b-5fe395707b41.png?resizew=144)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4557a368725226f2c8ea2efb7d30e478.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbc7e774e4ae40c23bf4ceed179230ca.png)
(2)若正三棱柱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f19aa140352dfcd9ad9eacdd5d8d1ed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cbc7e774e4ae40c23bf4ceed179230ca.png)
您最近一年使用:0次
2023-07-09更新
|
687次组卷
|
7卷引用:安徽省皖东十校联盟2024届高三上学期第三次月考数学试题
安徽省皖东十校联盟2024届高三上学期第三次月考数学试题湖北省荆州市沙市中学2024届高三上学期10月月考数学试题福建省莆田市第二十五中学2023-2024学年高三上学期期中数学试题福建省泉州市铭选中学、泉州九中、侨光中学三校2022-2023学年高二下学期期末联考数学试题(已下线)第02讲 空间向量的应用(3)(已下线)第02讲:空间向量与立体几何交汇(必刷6大考题+7大题型)-2023-2024学年高二数学上学期《考点·题型·难点》期末高效复习(人教A版2019选择性必修第一册)(已下线)专题06 用空间向量研究距离、夹角问题10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A版2019选择性必修第一册)
名校
10 . 如图,在直角梯形ABCD中,
,
,四边形
为平行四边形,对角线
和
相交于点H,平面
⊥平面
,
,
,G是线段
上一动点(不含端点).
(1)当点G为线段BE的中点时,证明:
平面
;
(2)若
,且直线
与平面
成
角,求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d004d2d115b477ade6af7ddb93db0df8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7ee81b6066188abee9d167b6c7f3f71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/def212da83f08df1309c9833521e2a8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/9/ab9cbc60-0737-414f-84d7-3652aea3f6bb.png?resizew=150)
(1)当点G为线段BE的中点时,证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/331da51a299acaaafa61551d0ebd3e79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7b044c6d1ad421d20412af276d73f0f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e72b2e1ff83e95df048745322982451.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b32c05247f6998d7a70d31d13be4148c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e5fa72f2878b476bc57f0df12d6555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fc01b54d8fb07d938806422a55b8fa8.png)
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2023-06-07更新
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7卷引用:安徽省黄山市2023届高三三模数学试题
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