名校
1 . 中国古代数学经典《数书九章》中,将底面为矩形且有一条侧棱与底面垂直的四棱锥成为“阳马”.在如图所示的阳马
中,底面
为矩形,
平面
,
,
,以
的中点
为球心,
为直径的球面交
于
(异于点
),交
于
(异于点
).
![](https://img.xkw.com/dksih/QBM/2021/6/1/2733223322804224/2760278163136512/STEM/fe249da1-f2ce-48d3-a453-43cb8a080a5f.png?resizew=222)
(1)证明:
;
(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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f440ed925c091b98ce01035dbab8e72b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.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/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.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/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://img.xkw.com/dksih/QBM/2021/6/1/2733223322804224/2760278163136512/STEM/fe249da1-f2ce-48d3-a453-43cb8a080a5f.png?resizew=222)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/40c1a03f93b56a1fb0b57d20d53b4323.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f50b3ae183997b707d16eb4e7f6712fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af68a7bf0da4f7c6f739d2e2461ad9b7.png)
您最近一年使用:0次
2021-07-09更新
|
340次组卷
|
2卷引用:浙江省北斗星盟2020-2021学年高二下学期5月阶段性联考数学试题
解题方法
2 . 如图,四棱锥
中,底面
是边长为2的菱形,
,
平面
,点
,
分别为
,
的中点,连接
,
交于点
,点
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/22/6db0379a-f697-46ac-9045-db960cda6529.png?resizew=176)
(1)证明:
平面
;
(2)若直线
与平面
所成角为60°,求三棱锥
的体积.
![](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/f945a69cf7e8213e50622125cde652f5.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/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73465a1f9aa03481295bf6bd3c6903ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/22/6db0379a-f697-46ac-9045-db960cda6529.png?resizew=176)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f31d6cfd6485fc2a433918403f65b300.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec1dcba40b263c1119ea0a36651c7812.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/589786dd7c3a2679c3230b671cd232d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/212b200cb65843fe03aab377d53991d7.png)
您最近一年使用:0次
2021-07-07更新
|
1255次组卷
|
3卷引用:吉林省长春市汽车经济技术开发区第三中学2021-2022学年高三上学期期中考试数学(文)试题
吉林省长春市汽车经济技术开发区第三中学2021-2022学年高三上学期期中考试数学(文)试题全国Ⅰ卷2021届高三高考数学(文)押题试题(二)(已下线)第九章 立体几何专练4—简单几何体的表面积与体积2-2022届高三数学一轮复习
名校
解题方法
3 . 已知三棱锥
(如图一)的平面展开图(如图二)中,四边形
为边长等于
的正方形,
和
均为正三角形,在三棱锥
中:
(1)证明:平面
平面
;
(2)若点
在棱
上运动,当直线
与平面
所成的角最大时,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fa485cf3776f36aaf4abaadaf30fb85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a09d9d486b7f91ba933210dd013a7f2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d077f6da8b2c00b152d4679aa2ed7f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98553247801c03de24cf7e687016e655.png)
您最近一年使用:0次
2022-03-08更新
|
1036次组卷
|
24卷引用:福建省厦门第一中学2019-2020学年高三上学期期中数学(理)试题
福建省厦门第一中学2019-2020学年高三上学期期中数学(理)试题(已下线)模块二 专题4 空间向量中探究、最值问题(苏教版高二)【市级联考】湖南省长沙市2019届上学期高三统一检测理科数学(已下线)【全国百强校】河北省衡水中学2019届高三第二学期一模考试理科数学试题江西省赣州市赣县三中2019-2020学年高二1月考前适应性考试数学(理)试题重庆市外国语学校2019-2020学年高三下学期4月月考数学(理)试题四川省成都外国语学校2019-2020学年高二5月月考数学(理)试题(已下线)专题06 立体几何中折叠问题(第三篇)-备战2020年高考数学大题精做之解答题题型全覆盖广西南宁三中2020届高三数学理科考试二试题山东省潍坊市第一中学2020-2021学年高三开学质量检查数学试题(已下线)专题8.8 翻折与探索性问题(精练)-2021年高考数学(理)一轮复习讲练测(已下线)专题8.8 翻折与探索性问题(精练)-2021年高考数学(理)一轮复习学与练陕西省西安中学2020-2021学年高三上学期12月月考理科数学试题陕西省西安中学2020-2021学年高三上学期第四次月考数学(理)试题重庆市清华中学校2020-2021学年高二上学期11月月考数学试题江西省七校2020-2021学年高二(创新班)上学期第三次联考数学(理)试题山东省青岛市青岛第五十八中学2020-2021学年高三上学期12月月考数学试题福建省厦门第一中学2021-2022学年高二12月适应性练习数学试题(已下线)专题25 盘点立体几何中最值问题——备战2022年高考数学二轮复习常考点专题突破广西柳州市2022届高三第二次模拟考试数学(理)试题安徽省合肥市第一中学2022届高三下学期素养拓展2理科数学试题河南省南阳市第一中学校2021-2022学年高三下学期第五次月考理科数学试题福建省宁德第一中学2022-2023学年高二下学期5月月考数学试题河南省信阳市新县高级中学2023届高三第一轮适应性考试(二)数学(理科)试题
名校
解题方法
4 . 如图,在圆锥
中,
为
的直径,点
在
上,
,
.
![](https://img.xkw.com/dksih/QBM/2021/5/11/2718671600861184/2726020954963968/STEM/b79538d3-ada5-4451-adc9-f3e9e13535b3.png?resizew=223)
(1)证明:平面
平面
;
(2)若直线
与底面所成角的大小为
,
是
上一点,且
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef49a3ca580a144cc65a609c167facc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d97cdc586744d208b6f69c9813af977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/667349d99185bb045030b733352ff7fd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a8dccfaf49b0f8e0fd927f30a50cdfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4d81d0bc9531fb9340cdbd0ff55fb44.png)
![](https://img.xkw.com/dksih/QBM/2021/5/11/2718671600861184/2726020954963968/STEM/b79538d3-ada5-4451-adc9-f3e9e13535b3.png?resizew=223)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c15b63176f43bc7a0654d0f6f45e7429.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15615de1a6df206dbd081251f676578e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/416798e797df41c9099adca91a925281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5617a404c5a3356753136e5a6b6d51e5.png)
您最近一年使用:0次
2021-05-21更新
|
744次组卷
|
4卷引用:黑龙江省哈尔滨师范大学附属中学2021-2022学年高三上学期期中考试数学(理)试题
20-21高一下·浙江·期末
5 . 如图,正方体
的棱长为2.
![](https://img.xkw.com/dksih/QBM/2021/5/19/2724637756424192/2724677766848512/STEM/0e2d8b1b2b454b8e92284c6c482abbcd.png?resizew=188)
(1)求异面直线
与
所成角的大小;
(2)求直线
与平面
所成角的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://img.xkw.com/dksih/QBM/2021/5/19/2724637756424192/2724677766848512/STEM/0e2d8b1b2b454b8e92284c6c482abbcd.png?resizew=188)
(1)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cfbc0b5a8fbde804bd8425a4b76d207.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a211ad5a06b505b8365a62c1946f3cb7.png)
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2021高三·江苏·专题练习
6 . 四棱锥P﹣ABCD,底面为正方形ABCD,边长为4,E为AB中点,PE⊥平面ABCD.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/4d3cac13-11ed-469d-942c-e34d394c30ea.png?resizew=199)
(1)若△PAB为等边三角形,求四棱锥P﹣ABCD的体积;
(2)若CD的中点为F,PF与平面ABCD所成角为45°,求PC与AD所成角的大小.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/8/4d3cac13-11ed-469d-942c-e34d394c30ea.png?resizew=199)
(1)若△PAB为等边三角形,求四棱锥P﹣ABCD的体积;
(2)若CD的中点为F,PF与平面ABCD所成角为45°,求PC与AD所成角的大小.
您最近一年使用:0次
2021-04-06更新
|
1188次组卷
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7卷引用:上海市奉贤区致远高中2020-2021学年高二下学期期中数学试题
上海市奉贤区致远高中2020-2021学年高二下学期期中数学试题(已下线)黄金卷06-【赢在高考·黄金20卷】备战2021年高考数学全真模拟卷(江苏专用)(已下线)专题13.3 空间图形的表面积和体积(重点练)-2020-2021学年高一数学十分钟同步课堂专练(苏教版2019必修第二册)沪教版(2020) 必修第三册 新课改一课一练 期末测试B江西省宜春市万载中学2021-2022学年高一下学期第二次月考数学(文)试题(已下线)专题11空间向量与立体几何必考题型分类训练-1(已下线)第20讲 空间向量与立体几何-3
2021·全国·模拟预测
7 . 如图所示,在四棱锥
中,
平面
,底面
为菱形,
,
,
分别为
,
的中点.
![](https://img.xkw.com/dksih/QBM/2021/3/17/2679720153645056/2683129971712000/STEM/6a88f787-c5cc-450c-a6b5-c252bef3ea5d.png?resizew=256)
(1)证明:
平面
;
(2)当
与平面
所成角为45°时,求二面角
的余弦值.
![](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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/2021/3/17/2679720153645056/2683129971712000/STEM/6a88f787-c5cc-450c-a6b5-c252bef3ea5d.png?resizew=256)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7592c4f01c8e06c7ee90df5b9413a9f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb97a871b6ed8467b659e23caa328507.png)
您最近一年使用:0次
8 . 过四棱柱
的顶点A作截面AEFG,其中底面ABCD是菱形,∠BCD=60°.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/29/fc8b3b42-173d-4318-b738-a30cea1e0bc0.png?resizew=210)
(1)证明:截面AEFG是平行四边形;
(2)已知
ADG是正三角形,平面ADG⊥平面ABCD,且AB=2,CF=3,求直线DF与平面BCFE所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/29/fc8b3b42-173d-4318-b738-a30cea1e0bc0.png?resizew=210)
(1)证明:截面AEFG是平行四边形;
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce4cba95fc7d4853a243f8e3fb20ce70.png)
您最近一年使用:0次
9 . 如图,三棱柱
中,
,
在底面
上的射影恰好是点
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/2021/2/6/2652034433630208/2653191971192832/STEM/7f5664b5c5c04808b77519b748a66487.png?resizew=227)
(1)证明:
平面
;
(2)求
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/972789cd8e1609191456a7cb31b5d63d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://img.xkw.com/dksih/QBM/2021/2/6/2652034433630208/2653191971192832/STEM/7f5664b5c5c04808b77519b748a66487.png?resizew=227)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/896e293411e2fd0da215ff20781cb36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b886daa3c9bb7153acd9f651f99eb2c1.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e168672b47d7e64dc1b404f8882c7dcf.png)
您最近一年使用:0次
2021-02-07更新
|
851次组卷
|
4卷引用:湖南省娄底市第一中学2020-2021学年高一下学期期中数学试题
湖南省娄底市第一中学2020-2021学年高一下学期期中数学试题浙江省绍兴市柯桥区2020-2021学年高三上学期期末数学试题(已下线)黄金卷14-【赢在高考·黄金20卷】备战2021年高考数学全真模拟卷(山东高考专用)(已下线)【新东方】绍兴高中数学00036
名校
10 . 如图,在长方体
中,T为
上一点,已知
.
![](https://img.xkw.com/dksih/QBM/2020/12/11/2612118240403456/2615316177690624/STEM/00f888113b0c48ba953b56bec47c90d4.png?resizew=215)
(1)求直线
与平面
所成角的大小(用反三角函数表示);
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29b4e56d5a7860b1f0068267fd7950b4.png)
![](https://img.xkw.com/dksih/QBM/2020/12/11/2612118240403456/2615316177690624/STEM/00f888113b0c48ba953b56bec47c90d4.png?resizew=215)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c59ab3c430815c8e1a5cef009876e6e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/961461a15b1c3bf7b5415be7e3c5c0c8.png)
您最近一年使用:0次
2020-12-16更新
|
295次组卷
|
3卷引用:上海市奉贤区致远高级中学2021-2022学年高二上学期期中教学评估数学试题