名校
解题方法
1 . 如图,在四棱锥P-ABCD中,底面ABCD是平行四边形,M,N分别是AB,PC的中点,若MN=BC=4,
,则异面直线PA与MN所成角的大小是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/e3ca79c8-221d-4bef-9465-13c60547ae1b.png?resizew=170)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f4ff82b837e4d920ee0482796e7dad7.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/e3ca79c8-221d-4bef-9465-13c60547ae1b.png?resizew=170)
A.30° | B.45° | C.60° | D.90° |
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2022-05-14更新
|
883次组卷
|
2卷引用:安徽省合肥市第十中学2021-2022学年高二下学期学考模拟数学试题
名校
2 . 在四棱锥
中,底面梯形
中
,
,
,
与
交于
点,
,连接
,则异面直线
与
所成角的余弦值为( )
![](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/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22b88c9beaca6a4bc378ba0cb7ff6e33.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c327b3e91d8bea53255d9308a952a276.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c931f80a4e667b5e1c6aa49b5024af7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2022-04-14更新
|
436次组卷
|
2卷引用:安徽省黄山市2022届高三下学期第二次质量检测文科数学试题
3 . 在正方体
中,E为棱
的中点,则异面直线AE与BC所成角的余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
4 . 图,在长方体
中,
,E,F分别为棱
的中点,则异面直线
与
所成角的余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2fdaabe77c20f07d3e44dc27d703ffd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1797b6b52b9ef3d5a39cfc583bafac80.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce1b066f8869d0ff4513f7a99745125.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/5/29/e5918535-9280-4d87-bcce-9571ac9cf1cc.png?resizew=179)
A.![]() | B.![]() | C.![]() | D.![]() |
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2022-03-15更新
|
452次组卷
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4卷引用:安徽省“皖东县中联盟”2021-2022学年高三上学期期末联考文科数学试题
5 . 如图,正四棱锥(底面为正方形,顶点在底面的射影为底面正方形的中心)P-ABCD中,
,点E为PB中点,若CE与PD所成的角余弦值为
,则四棱锥P-ABCD的体积为( )
![](https://img.xkw.com/dksih/QBM/2022/2/23/2922734397734912/2926951012237312/STEM/d8a6555e65e344e18c028d05e3b7c348.png?resizew=115)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d2c15801fee2405573677484f5dcfa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
![](https://img.xkw.com/dksih/QBM/2022/2/23/2922734397734912/2926951012237312/STEM/d8a6555e65e344e18c028d05e3b7c348.png?resizew=115)
A.![]() | B.![]() |
C.![]() | D.![]() |
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2022-03-03更新
|
1219次组卷
|
7卷引用:百师联盟2022届高三下学期2月开年摸底联考全国卷1理科数学试题
名校
解题方法
6 . 直线a与平面
所成的角为15°,点P为空间一定点,过点P作与
成45°、与a成60°的直线l可以作( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
A.2条 | B.3条 | C.4条 | D.无数条 |
您最近一年使用:0次
名校
7 . 如图,四棱锥
的外接球的球心为
,其中底面
为正方形,若平面
过球心
,且
,
,则异面直线
,
所成角的余弦值为( )
![](https://img.xkw.com/dksih/QBM/2022/2/12/2914638771863552/2924760169103360/STEM/f5ef765c-b195-4f6d-8258-93d6c4e77d55.png?resizew=175)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48c7c7d72503e7cc3d1a5080a2f0d2dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ea4ecdd5e0a786af56f4d73856b19f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/2022/2/12/2914638771863552/2924760169103360/STEM/f5ef765c-b195-4f6d-8258-93d6c4e77d55.png?resizew=175)
A.![]() | B.![]() | C.![]() | D.![]() |
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2022-02-26更新
|
414次组卷
|
2卷引用:1号卷·A10联盟2022届高三下学期开年考文科数学试卷
8 . 在正四面体
中,点
是
的中点,则
与
所成角的正弦值为( )
![](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/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
解题方法
9 . 已知
为正方体,P,Q,R分别为棱
的中点,则①
平面
;②
平面
;③
;④
平面
,上述四个结论正确的个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a67eed1d223c0567a8c104d709ceba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307807ee10071bafbe922eb18d2517d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08361173b096d18b33210a955e109f42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f81fa367ec317fe2a30142e1c30cce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08361173b096d18b33210a955e109f42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a350c77735e8e92983f8dd2e7776e12.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4645450a006f2c20087486d0833afbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08361173b096d18b33210a955e109f42.png)
A.1 | B.2 | C.3 | D.4 |
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10 . 在正方体
中,异面直线BD与
所成角的正弦值是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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