1 . 在如图所示的五面体中,已知矩形
所在的平面与半圆弧
所在的平面垂直,
,
是半圆弧上异于
,
的点,
,
,直线
与
所成角的余弦值为
.
![](https://img.xkw.com/dksih/QBM/2021/11/9/2847657649127424/2847696062365696/STEM/4d0726a5-e882-4dda-8fc4-a9cbc3c07e45.png?resizew=259)
(1)证明:平面
平面
;
(2)求五面体
的体积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83bb3820bab977db734f4335e4fde720.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bd8a97f37156cec6592795da3941f87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/526908dfb46cf151b8ab1492a9d52047.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/821309f088a175c00dc0f4828334503d.png)
![](https://img.xkw.com/dksih/QBM/2021/11/9/2847657649127424/2847696062365696/STEM/4d0726a5-e882-4dda-8fc4-a9cbc3c07e45.png?resizew=259)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d28c625d7ac6878957facc8274d459c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
(2)求五面体
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
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3卷引用:新疆维吾尔自治区乌鲁木齐市第十二中学2024届高三上学期9月月考数学(文)试题
名校
解题方法
2 . 正方体
中,点
,
分别为棱
,
上的点(不包含端点),设二面角
的平面角为
,若
,则
的取值范围为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7be1faf8713ce4d71f82f086ca4712c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0e2a1d1eed1475ea1cd49697d6732e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e50eca5606f0f8db8ca9a5016f923d45.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5卷引用:新疆乌鲁木齐市第十二中学2023届高三下学期2月月考数学(文)试题
新疆乌鲁木齐市第十二中学2023届高三下学期2月月考数学(文)试题江苏省苏州市第十中学2021-2022学年高三上学期10月阶段性检测数学试题(已下线)第04讲 空间直线、平面的垂直 (练)(已下线)考点34 二面角【理】-备战2022年高考数学典型试题解读与变式(已下线)专题06 空间向量与立体几何(突破训练)-备战2022年高考数学二轮复习重难考点专项突破训练(全国通用)
3 . 棱长为1的正方体ABCD﹣A1B1C1D1中,P,Q分别为C1D1,BC的中点,现有下列结论:①PQ∥BD1;②PQ∥平面BB1D1D;③PQ⊥平面AB1C;④四面体D1﹣PQB的体积等于
.其中正确的是( )
![](https://img.xkw.com/dksih/QBM/2021/5/22/2726625096425472/2831394144083968/STEM/5319d3b8-4461-40da-99ca-d3c650910ee8.png?resizew=223)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6fffe70910079ad65b954b6640562cfa.png)
![](https://img.xkw.com/dksih/QBM/2021/5/22/2726625096425472/2831394144083968/STEM/5319d3b8-4461-40da-99ca-d3c650910ee8.png?resizew=223)
A.①③ | B.②③ | C.②④ | D.③④ |
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8卷引用:新疆维吾尔自治区乌鲁木齐市第十二中学2024届高三上学期8月月考数学(理)试题
新疆维吾尔自治区乌鲁木齐市第十二中学2024届高三上学期8月月考数学(理)试题2020届安徽省安庆市高三第二次模拟理科数学试题(已下线)第33讲 空间中的平行关系-2021年新高考数学一轮专题复习(新高考专版)(已下线)专题13.2 本图形位置关系(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)四川省乐山市十校2021-2022学年高二上学期期中考试数学(理)试题(已下线)2022年全国高考乙卷数学(理)试题变式题21-23题(已下线)2022年全国高考乙卷数学(理)试题变式题5-8题(已下线)第11讲空间直线、平面的垂直(核心考点讲与练)-2021-2022学年高一数学考试满分全攻略(人教A版2019必修第二册)(原卷版)
名校
4 . 已知正方形
与正方形
所成二面角的平面角的大小为
,
是正方形
所在平面内的一条动直线,则直线
与
所成角的正切值的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b312dab930cbbb9a4bb1a99f044dab73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/037fb348109dc2063a268b10eb925a57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b312dab930cbbb9a4bb1a99f044dab73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
A.![]() | B.![]() | C.1 | D.![]() |
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2卷引用:新疆维吾尔自治区乌鲁木齐市第十二中学2024届高三上学期8月月考数学(理)试题
5 . 如图①,圆O的直径AB=2,圆上两点C,D在直线AB的两侧,且∠CAB=45°;∠DAB=60°,沿直线AB将半圆ACB折起,使两个半圆所在的平面互相垂直(如图②).
![](https://img.xkw.com/dksih/QBM/2021/5/6/2715351937728512/2799687618404352/STEM/b8b5638b-dd85-479d-a875-cc9dd2af42bf.png?resizew=498)
(1)求三棱锥O-BCD的体积;
(2)求直线CD与平面ABC所成角的正切值.
![](https://img.xkw.com/dksih/QBM/2021/5/6/2715351937728512/2799687618404352/STEM/b8b5638b-dd85-479d-a875-cc9dd2af42bf.png?resizew=498)
(1)求三棱锥O-BCD的体积;
(2)求直线CD与平面ABC所成角的正切值.
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2卷引用:新疆维吾尔自治区乌鲁木齐市第四十中学2023届高三下学期4月月考文科数学试题
6 . 如图,在水平放置的四棱锥
中,
平面
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2021/4/28/2709693311049728/2798224034095104/STEM/8d64896f-9f13-4a2b-868b-ea61b5d2bc2b.png?resizew=217)
(1)
为线段
上动点,试确定点
的位置,使
并证明;
(2)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc655b4d76a5b4d74271082ced237657.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e04a28a7f47d499eaf7451d5a6c3872.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b9d54cbbf601f4583659771eb534997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8372da7e78999d2016ce485fba43ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf410aab32ba002b2c4e7343e7efd4c4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d81ddfbd5549f312ade47cb7f740059.png)
![](https://img.xkw.com/dksih/QBM/2021/4/28/2709693311049728/2798224034095104/STEM/8d64896f-9f13-4a2b-868b-ea61b5d2bc2b.png?resizew=217)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dee2d6f5c8afb4081176d398a8f0469.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11c3762eb09409441a1d1d7c0ccbbe60.png)
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7 . 已知圆柱的母线长与底面半径之比为
,四边形
为其轴截面,若点
为上底面
的中点,则异面直线
与
所成角的余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ae319d396e6d0adbf905db1dc8ad877.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/16d65cecaf8a3dc2953f4109c75a981e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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5卷引用:新疆维吾尔自治区乌鲁木齐市第十二中学2024届高三上学期8月月考数学(文)试题
新疆维吾尔自治区乌鲁木齐市第十二中学2024届高三上学期8月月考数学(文)试题云南省曲靖市沾益县第四中学2020-2021学年高二6月月考数学(文)试题云南省曲靖市沾益县第四中学2020-2021学年高二6月月考数学(理)试题河北省邢台市2020-2021学年高一下学期第三次月考数学试题(已下线)江西省五市九校协作体2023届高三第一次联考文科数学试题变式题6-10
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8 . 如图,在直三棱柱
中,
,
,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/564517b02a6a50ff1ef6251d634530f8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/8a07055c-85d6-4433-bc7d-9d04a23fbd3d.png?resizew=159)
(1)证明:当
时,求证:
平面
;
(2)当
时,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/209acf15985d1ea1ad86fc4a37e38c0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55a2310cbba5e050488cd9296eb195d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/564517b02a6a50ff1ef6251d634530f8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/8a07055c-85d6-4433-bc7d-9d04a23fbd3d.png?resizew=159)
(1)证明:当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3cf0f585938ede9eca890a6eb326d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6d06903252260d31d1a9cdeb735b089.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8845fadc307f1d308410e829becedd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78ceb31247add8ca7b0853e801e1d125.png)
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2卷引用:新疆维吾尔自治区乌鲁木齐市第八十中学2024届高三上学期11月月考数学试题
名校
解题方法
9 . 如图,
圆O所在平面,
是圆O的直径,
是圆周上一点其中
,则
与平面
所成角的正弦值为( )
![](https://img.xkw.com/dksih/QBM/2021/7/7/2758866481496064/2767617586184192/STEM/19825d6a6046408daed3fe833fb76d2e.png?resizew=160)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09df76f7f5ca357ad7ebb1a0cb41ab8b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
![](https://img.xkw.com/dksih/QBM/2021/7/7/2758866481496064/2767617586184192/STEM/19825d6a6046408daed3fe833fb76d2e.png?resizew=160)
A.![]() | B.![]() | C.![]() | D.![]() |
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5卷引用:新疆维吾尔自治区乌鲁木齐市第101中学2024届高三上学期8月月考数学(理)试题
新疆维吾尔自治区乌鲁木齐市第101中学2024届高三上学期8月月考数学(理)试题黑龙江省绥化市第二中学2020-2021学年高一下学期期末数学试题(已下线)第九章 立体几何专练7—线面角小题1-2022届高三数学一轮复习(已下线)2022年全国高考甲卷数学(文)试题变式题21-23题(已下线)2022年全国高考甲卷数学(文)试题变式题9-12题
10 . 如图是矩形
和边
为直径的半圆组成的平面图形,将此图形沿
折叠,使平面
垂直于半圆所在的平面,若点
是折后图形中半圆
上异于
的点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/9b91e89c-ebd2-4665-9065-d16b67d27304.png?resizew=311)
(1)证明:
;
(2)若
,且异面直线
和
所成的角为
,求平面
与平面
所成的锐二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/28/9b91e89c-ebd2-4665-9065-d16b67d27304.png?resizew=311)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ad2dc5dea4563dfd9afefeb8b210eeb.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f80f51c31583fea58fde645474d60b8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c67d01e61dc0042e67b5e8ec8e727c22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/422210c777ac0d625bbd81cc7601bf9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bee4a6b8ef3e79b4482388c3391d8b18.png)
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