1 . 如图,在正方体
中,点
,
分别是棱
,
上的动点.给出下面四个命题:
![](https://img.xkw.com/dksih/QBM/2020/7/22/2511197705404416/2511935240536064/STEM/4828e24d026d474c8d09460568ceffc1.png?resizew=189)
①若直线
与直线
共面,则直线
与直线
相交;
②若直线
与直线
相交,则交点一定在直线
上;
③若直线
与直线
相交,则直线
与平面
所成角的正切值最大为
;
④直线
与直线
所成角的最大值是
.
其中,所有正确命题的序号是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c3defdd4d0c665d55184b84a7eb316f.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/f66fb71b75b63594ebeeeebd1963eed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://img.xkw.com/dksih/QBM/2020/7/22/2511197705404416/2511935240536064/STEM/4828e24d026d474c8d09460568ceffc1.png?resizew=189)
①若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
②若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
③若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
④直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d88591679796c52024d11c4de641bdb.png)
其中,所有正确命题的序号是( )
A.①④ | B.②④ | C.①②④ | D.②③④ |
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2020-07-23更新
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7卷引用:四川省成都市天府新区2021-2022学年高一下学期期末数学文科试题
四川省成都市天府新区2021-2022学年高一下学期期末数学文科试题四川省成都市天府新区2021-2022学年高一下学期期末数学理科试题北京市通州区2019-2020学年高一(下)期末数学试题(已下线)第1章+章末复习课(重点练)-2020-2021学年高二数学(文)十分钟同步课堂专练(人教A版选修1-1)(已下线)第1章+章末复习课(重点练)-2020-2021学年高二数学(理)十分钟同步课堂专练(人教A版选修2-1)海南省海口市第四中学2020-2021学年高二上学期期中考试数学试题新疆北屯高级中学2021届高三10月月考理科数学试题
解题方法
2 . 已知正三棱柱ABC﹣A1B1C1的底面边长为
,且该三棱柱外接球的表面积为14π,若P为底面A1B1C1的中心,则PA与平面ABC所成角的大小为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/180c9efbc1f04ec3336259832fc9c76b.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
3 . 在四面体
中,
,
,
两两垂直,
,
、
分别为棱
、
的中点,则直线
与平面
所成角的余弦值( )
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/831d40ae84e37a5939ccd15187d5e2a2.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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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|
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4卷引用:四川省绵阳南山中学2019-2020学年高二4月月考(学情调研)数学(理)试题
四川省绵阳南山中学2019-2020学年高二4月月考(学情调研)数学(理)试题四川省宜宾市叙州区第一中学校2019-2020学年高二下学期第四学月考试数学(理)试题(已下线)1.4.3 运用立体几何中的向量方法解决距离与角度问题-2020-2021学年高二数学课时同步练(人教A版选择性必修第一册)陕西省渭南市富平县2020-2021学年高二上学期期末理科数学试题
名校
解题方法
4 . 如图,四棱锥
中,
平面
,
,
,
,
,
,M是BC中点,N是线段SA上的点,设MN与平面SAD所成角为
,则
的最大值为( )
![](https://img.xkw.com/dksih/QBM/2020/4/13/2440832867532800/2442064795099136/STEM/5ba0ef99cf3b4b7499cb210db6926252.png?resizew=177)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fb2e071d4e01107dcf7d95cbb86b415.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1a260579533cbf20b8fcff1cd6e736e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f3ba8b214034c287276f4966069d95e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b4179e1ab8705cf19ea7aaf48888843.png)
![](https://img.xkw.com/dksih/QBM/2020/4/13/2440832867532800/2442064795099136/STEM/5ba0ef99cf3b4b7499cb210db6926252.png?resizew=177)
A.![]() | B.![]() | C.![]() | D.![]() |
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5卷引用:四川省泸州市泸县第五中学2022届高三下学期高考适应性考试数学(理)试题
四川省泸州市泸县第五中学2022届高三下学期高考适应性考试数学(理)试题广西玉林市2019-2020学年高三第一次适应性考试数学(理)试题广西南宁市2019-2020学年高三第一次适应性测试数学(理)试题(已下线)专题08向量方法解决角和距离(测)(理科)第一篇 热点、难点突破篇-《2022年高考理科数学二轮复习讲练测》(全国课标版)福建省龙岩市上杭县第二中学2021-2022学年高二3月月考数学试题
5 . 在正三棱柱
中,已知
,
在棱
上,
,则
与平面
所成角的大小为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d6bdfb0e1be5583e794ab614a8abe1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac61c24f99a4e466f1e2ea011893866.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
名校
6 . 在边长为8的等边
中,
分别为
的中点,现将
沿
折起到
的位置,使得
,则直线
与底面
所成角的正弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5881068127a39caf319492b4177204f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f460edcced5597615113c0fdc95b1dfc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85f0138bbe2bb5fd18b28977ee2a6a01.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf13d683a9f0f4197f01c62d691d9a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d65242718f20b2742841c58ee7642cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-03-16更新
|
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2卷引用:四川省内江市第六中学2020-2021学年高三上学期第三次月考数学(理)试题
名校
解题方法
7 . 已知三棱柱
的侧棱与底面边长都相等,
在底面
内的射影为
的中心
,则
与底面
所成角的余弦值等于( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-03-01更新
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6卷引用:四川省攀枝花市第十五中学2019-2020学年高二下学期期中考试数学(理科)试题
四川省攀枝花市第十五中学2019-2020学年高二下学期期中考试数学(理科)试题人教A版(2019) 必修第二册 突围者 第八章 综合拓展提升山东省济宁市邹城一中2019-2020学年高一数学下学期期中检测试题山东省博兴县第一中学2019-2020学年高一下学期开学检测数学试题人教A版(2019) 必修第二册 实战演练 第八章 验收检测(已下线)第8章 立体几何初步(单元基础卷)-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)
8 . 如图,在四棱锥
中,侧面
是边长为6的正三角形,侧面
与矩形
所在平面垂直,
分别为侧棱
的中点,
为棱
上一点,且
,
.若平面
与
交于点
,则
与底面
所成角的正切值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/3/958f9d07-f2e6-4ce6-9ba5-60e38bea12a5.png?resizew=184)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/930e85bc9f73e86cfb6ce9b076433f1b.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/0761165f1176f3a5fe4f7b052832316d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/82773737609e65dea3c5c67099f1b10d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/868a98a5d6337c3dd9bca228e3545665.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb26d84907c923278ac4626a9d58947.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/3/958f9d07-f2e6-4ce6-9ba5-60e38bea12a5.png?resizew=184)
A.![]() | B.![]() | C.![]() | D.![]() |
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|
511次组卷
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3卷引用:四川省遂宁市射洪中学2021-2022学年高二上学期第一次月考数学理试题
9 . 一个正方体的平面展开图如图所示.在该正方体中,给出如下3个命题:
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/e64af30c-eb1e-4b67-a63e-7b8cfe713b99.png?resizew=143)
①
; ②
与
是异面直线且夹角为60°; ③
与平面
所成的角为45°.
其中真命题的个数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/e64af30c-eb1e-4b67-a63e-7b8cfe713b99.png?resizew=143)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfb0769fddbe87139fcfd9c3d467976c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77a7e4a6765ce78b05ee97764771e01f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06e322e0c87479bba874db9ae9ba36b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
其中真命题的个数是( )
A.0 | B.1 | C.2 | D.3 |
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2020-02-18更新
|
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4卷引用:四川省资阳市2019-2020学年高二上学期期末数学(理)试题
10 . 在
中,
,
是
的中点,
平面
,如果
、
与平面
成的角分别是30°和60°,那么
与平面
所成的角为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
A.30° | B.45° | C.60° | D.75° |
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|
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3卷引用:四川省乐山市2019-2020学年高二上学期期末数学(文)试题