23-24高二上·广东深圳·期末
1 . 在三棱柱
中,
平面
,已知
,
,
,点
是棱
的中点.
(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/21f9157fce2a8339d281178c7c0bccbe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bec738fd1916032dff2b93f84f039404.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa7aeb2a8d1437eeb4482c3b6ad9f315.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7932b50fa677dfcd8e3b5061a90c133.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06ad7c180d6d084ecb25f23cb6fe9b10.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69bcb3226e013650b7d8827c31dd41d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/914d46f7e72b55d2ff3d9bc38e02b31d.png)
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2 . 已知四棱锥
的底面
为等腰梯形,
,
平面
.
;
(2)若平面
与平面
夹角的余弦值为
,求四棱锥
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/f63347027498aebd957b89b922a86dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45fbffb9e2c7fa7c5006cde8da0cabe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4710f75c66f19825a3e44b48f78bbac.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b60870baa5e3fbc33a749aa5f0a94be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
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名校
3 . 五面体
的底面
是一个边长为4的正方形,
,
,
,二面角
的大小为
.
![](https://img.xkw.com/dksih/QBM/2024/1/20/3415360016310272/3416420538122240/STEM/ddb8c8ba4e424aeca73622906be24bb2.png?resizew=272)
(1)求证:
;
(2)设点P为棱
上一点,若平面
与平面
的夹角的余弦值为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb64353c99068a7a1a8508a22f5b25b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19b57b2a77d4f4465e909fe9c0b49a1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdd721393a3d94cd3560678a50731792.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a6d5aaf764583992b9ec1e7dea8f5f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be6a6301878fed2a01413020b27310a5.png)
![](https://img.xkw.com/dksih/QBM/2024/1/20/3415360016310272/3416420538122240/STEM/ddb8c8ba4e424aeca73622906be24bb2.png?resizew=272)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d216511526a5834a019505223197d45.png)
(2)设点P为棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c54d01623f09f23103f03ba1135fc6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a09d9d486b7f91ba933210dd013a7f2c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaa42621cd6793e7f3673fdb49bc3123.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ad17d9b93decf5f49ef629fac4b80b4.png)
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4 . 在空间直角坐标系中,
.
(1)求
的余弦值;
(2)求三角形
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/44d6642a2d7c1e68c389bdd67315c12b.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cbce11aa19b8bd2bf6ee5a834e005de.png)
(2)求三角形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
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解题方法
5 . 如图,平行六面体
的底面是正方形,
,
,若
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/13/8b9f56f2-5e37-402e-a55a-834eab198d47.png?resizew=176)
(1)用
,
,
表示
;
(2)求异面直线
与
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e322f79e083e471b34950b9ffabffdc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92105835f8075cb75dff244e908370b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f3adc4ed291596abf3bb93ae7a075d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e984585ddf28c039219afcebf229de7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8780f5b68f8907a57c1c2f96233a78c5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/13/8b9f56f2-5e37-402e-a55a-834eab198d47.png?resizew=176)
(1)用
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73a0b19e69be46452425916a0fcb49c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccec46f7c4da972fef6e940158628242.png)
(2)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10d8eb4a9f462ca0c1d49c3fe91e720d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe734023d4e70010a6b2cc3267cb86e.png)
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2024-01-25更新
|
109次组卷
|
2卷引用:广东省东莞市2023-2024学年高二上学期期末教学质量检查数学试题
解题方法
6 . 如图,在三棱锥中,
平面
,
,
,F是
的中点,且
.
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a38a3e226347af68d7b15295342e209.png)
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5卷引用:广东省部分学校2023-2024学年高二上学期期末教学质量监测数学试卷
名校
7 . 如图,在圆锥
中,
是圆
的直径,且
是边长为4的等边三角形,
为圆弧
的两个三等分点,
是
的中点.![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
平面
;
(2)求平面
与平面
所成锐二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18e5ef91fb27dd684a27ae7f1993cfba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72e49817548cb45b3d1e58570644c6fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39acab3cfb59bfc9591371721ab01d93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d4db9b82b67efe45a02fca32bfcf5dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895d6f710d5f67e1d4c7408d50d77281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc6f6dfdbe7d39891c35f67e1a95c7f.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc6f6dfdbe7d39891c35f67e1a95c7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5000fea066102e62cf2128ccbbd2b3e3.png)
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2237次组卷
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11卷引用:广东省深圳市宝安区2024届高三上学期期末数学试题
广东省深圳市宝安区2024届高三上学期期末数学试题陕西省西安市鄠邑区2023-2024学年高三上学期期末考试(理科)数学试题广东省深圳市南山区华侨城中学2024届高三下学期一模适应性考试数学试题(已下线)微考点5-2 新高考新试卷结构立体几何解答题中与旋转体有关的问题湖南省长沙市四县区2024届高三下学期3月调研考试数学试卷(已下线)专题04 立体几何河北省石家庄一中2023-2024学年高二下学期第一次月考数学试题江西省南昌市第十九中学2023-2024学年高三下学期第一次模拟考试数学试卷(已下线)湖南省长沙市四县区2024届高三下学期3月调研考试数学试题变式题11-15(已下线)2024年北京高考数学真题平行卷(基础)(已下线)2024年高考全国甲卷数学(理)真题变式题16-23
名校
8 . 如图所示的几何体是由一个直三棱柱和半个圆柱拼接而成.其中,
,点
为弧
的中点,且
四点共面.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/19/7a4e298c-07e9-4350-b1c6-31b239b59f4c.png?resizew=138)
(1)证明:
四点共面;
(2)若平面
与平面
夹角的余弦值为
,求
长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fea25b3a66048a7df4b36687407fded.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd5f01b6bc45dceed966d91d0f6f0c91.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/19/7a4e298c-07e9-4350-b1c6-31b239b59f4c.png?resizew=138)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dadeaa994b8065400aa2f8b251843f87.png)
(2)若平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ae8768996ca9a0f2c5d9a19abbd54df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90131175c3fb6a3837a22d7d5bbc268d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dae015b0d4134a91faa1ab01bbb00fbd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
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7卷引用:广东省惠州市博罗县2023-2024学年高二上学期期末数学试题
广东省惠州市博罗县2023-2024学年高二上学期期末数学试题广东省惠州市2023-2024学年高二上学期1月期末数学试题江苏省南京师范大学附属中学2021届高三下学期模拟考试数学试题河北省衡水市冀州中学2024届高三第一次调研数学试题(已下线)热点6-1 线线、线面、面面的平行与垂直(6题型+满分技巧+限时检测)(已下线)第3章 空间向量及其应用(知识归纳+题型突破)-2023-2024学年高二数学单元速记·巧练(沪教版2020选择性必修第一册)(已下线)微考点5-2 新高考新试卷结构立体几何解答题中与旋转体有关的问题
名校
解题方法
9 . 在三棱台
中,
底面
,底面
是边长为2的等边三角形,且
,D为
的中点.
平面
.
(2)平面
与平面
的夹角能否为
?若能,求出
的值;若不能,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ecf072589c0f901d92f6bda111d841.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/787ac5e13622afab5e9f8603afe42356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/787ac5e13622afab5e9f8603afe42356.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99c0a06a56ad5be6b3773c48daa7f7e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b79dd200766db27fb90d6bd1992cf658.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69771fbcfc8f07cfb7ece1d2c2e6830b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9b7b7793d29d66dfdd89e7a6564a35c.png)
(2)平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9b7b7793d29d66dfdd89e7a6564a35c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f96c673a2381f118ea2d3efc0bca1f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1e5fa72f2878b476bc57f0df12d6555.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a696a182fff038a86b2bbe8ca099442.png)
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2024-01-24更新
|
224次组卷
|
3卷引用:广东省肇庆市2023-2024学年高二上学期期末教学质量检测数学试题
名校
10 . 如图,三棱锥
中,
,
分别是
中点,
,
,点
在底面
上的射影为点
. 求:
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/14/0ddc6068-e2da-4653-b856-37a41be87c2c.png?resizew=148)
(1)
的大小;
(2)平面
与平面
的夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78002bca853929365a3f58082f3e7637.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b199a99e53d67ff4abf233930961a29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b467455ea6b8b7f5e6dd53110bc22060.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad398981cf15fa1378a5faaff2d6ca8c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/549587c55535a31fa6e639ff57bc3e95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/14/0ddc6068-e2da-4653-b856-37a41be87c2c.png?resizew=148)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/727ad3e630a224303d6d3b8ad5c114ba.png)
(2)平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe8a84ca3a13f82aff1a022edc66065.png)
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2024-01-24更新
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110次组卷
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2卷引用:广东省深圳市高级中学2023-2024学年高二上学期期末考试数学试题