1 . 在三棱锥P﹣ABC中,已知△ABC是边长为6的等边三角形,PA⊥平面ABC,PA=12,则AB与平面PBC所成角的余弦值为( )
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-09-02更新
|
100次组卷
|
5卷引用:陕西省榆林市2020届高考数学(理科)(四模)第四次测试试题
陕西省榆林市2020届高考数学(理科)(四模)第四次测试试题(已下线)第34讲 空间中的垂直关系-2021年新高考数学一轮专题复习(新高考专版)陕西省榆林市2020届高三下学期第四次高考模拟数学(文)试题广西名校2019-2020学年高二下学期期末数学(理)试题广西名校2019-2020学年高二下学期期末数学(文)试题
名校
解题方法
2 . 正方体
中,直线
和平面
所成的角为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fb04914c4e8fb3483da44c67fe1809f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-09-01更新
|
718次组卷
|
2卷引用:安徽省淮南市寿县第一中学2020届高三下学期最后一卷数学(文)试题
19-20高三下·浙江·阶段练习
3 . 已知
是正四面体,
是棱
上的中点,
是线段
的动点,
与直线
所成的最小角为
,
与平面
所成的角为
,二面角
的平面角为
,则( )
![](https://img.xkw.com/dksih/QBM/2020/8/16/2528958831779840/2529588777279488/STEM/fde89173-ee4d-49fd-bd03-0ea3116c0919.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.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/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/325fbf7c39864c58789bc8ebe853dbe9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
![](https://img.xkw.com/dksih/QBM/2020/8/16/2528958831779840/2529588777279488/STEM/fde89173-ee4d-49fd-bd03-0ea3116c0919.png)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
4 . 如图,在六棱锥
中,底面ABCDEF为正六边形,
,
底面ABCDEF,P为OD的中点,Q为OE的中点,下列说法正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/44b8f63e-c430-4a39-9915-5d6907fc9787.png?resizew=118)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b5a0156a23685effc9844661aaae286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09cf17ee13e937cd8b84879da17d15b4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4317430d5a2b61d9a2a88b73e7d7ad39.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/23/44b8f63e-c430-4a39-9915-5d6907fc9787.png?resizew=118)
A.![]() ![]() |
B.直线AP与直线BQ互为异面直线 |
C.平面OBC与平面OAF垂直 |
D.直线OC与平面ABCDEF所成的角的正切值为![]() |
您最近一年使用:0次
2020-08-15更新
|
158次组卷
|
2卷引用:安徽省宣城七校2019-2020学年高一下学期联考理科数学试题
名校
解题方法
5 . 已知四棱锥
的底面
为边长为2的菱形,
,E为
中点,则
与底面
所成角的正切值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9048e0a77f95e0b3656c892f2bb9238c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34c157ff302a881c17514534903c575f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
A.![]() | B.![]() | C.![]() | D.2 |
您最近一年使用:0次
2020-08-14更新
|
208次组卷
|
2卷引用:安徽省蚌埠市2020届高三下学期第四次教学质量检查数学(文)试题
名校
解题方法
6 . 已知正四面体
,则
与平面
所成角的余弦值为( )
![](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/ca67a5b8f69507c8b80379e86f90a8ce.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-08-02更新
|
373次组卷
|
2卷引用:江苏省宿迁市2019-2020学年高一下学期期末数学试题
7 . 在四面体
中,
,
,
,点P是棱
上的动点,点Q为棱
的中点,记直线
与直线
所成的夹角为
,直线
与平面
所成的角为
,二面角
的平面角为
,则有( )
![](https://img.xkw.com/dksih/QBM/2020/7/30/2516891955380224/2518007260856320/STEM/2ce50d20-5aab-4cf9-b81a-d496584dcb3d.png?resizew=157)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce519312a849963b376c202c3f9d7cf7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c1c13e2642c7d31216e7aea0980a367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d783fe7f3ce673d5d21281174e7a7968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/715cc9ea5e7d80930284ffb117142770.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
![](https://img.xkw.com/dksih/QBM/2020/7/30/2516891955380224/2518007260856320/STEM/2ce50d20-5aab-4cf9-b81a-d496584dcb3d.png?resizew=157)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-07-31更新
|
541次组卷
|
2卷引用:浙江省杭州市富阳中学2020届高三下学期6月三模数学试题
名校
解题方法
8 . 在《九章算术》中,将底面为矩形且有一条侧棱与底面垂直的四棱锥称为“阳马”.如图,四棱锥P﹣ABCD为阳马,侧棱PA⊥底面ABCD,PA=AB=AD,E为棱PA的中点,则直线CE与平面PAD所成角的正弦值为( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/22/1ed94d17-4487-4b36-a4f3-23551b12c4df.png?resizew=135)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/22/1ed94d17-4487-4b36-a4f3-23551b12c4df.png?resizew=135)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-07-27更新
|
1368次组卷
|
11卷引用:四川省绵阳市2019-2020学年高一(下)期末数学试题
四川省绵阳市2019-2020学年高一(下)期末数学试题四川省绵阳市2019-2020学年高一下学期期末教学质量测试数学试题宁夏吴忠中学2020-2021学年高二12月月考数学(理)试题广东省佛山市第一中学2020-2021学年高二上学期第一次段考数学试题四川省广安市2020-2021学年高一下学期期末数学试题河北省衡水市安平中学2020-2021学年高一下学期期末数学试题山东省临沂市平邑第一中学新校区2021-2022学年高一下学期6月月考数学试题宁夏中卫中学2022-2023学年高二下学期第二次综合考试A卷数学(理)试题湖南省邵阳市第二中学2022-2023学年高一下学期期中数学试题广东省广州市真光中学2022-2023学年高一下学期5月阶段质量检测数学试题(已下线)第一章 空间向量与立体几何(单元提升卷)-【满分全攻略】2023-2024学年高二数学同步讲义全优学案(人教A版2019选择性必修第一册)
名校
解题方法
9 . 如图,四棱锥
中,
为矩形,平面
平面
,
,
是线段
上的点(不含端点).设
与
所成的角为
,
与平面
所成的角为
,二面角
的平面角为
,则
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/29/54693708-f1bf-419a-a553-258ba3942cf8.png?resizew=200)
![](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/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a7cefa14a90337bbbb6e378d8a892d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62974d34de3a12418d6b700420afd1b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a7cefa14a90337bbbb6e378d8a892d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79bc7ace9f99ba23095c3d12fbaac8f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f435efcc7869eec21bdba1ed81dc3f5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/29/54693708-f1bf-419a-a553-258ba3942cf8.png?resizew=200)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2020-07-27更新
|
937次组卷
|
5卷引用:浙江省绍兴市柯桥区2020届高三下学期6月方向性考试数学试题
浙江省绍兴市柯桥区2020届高三下学期6月方向性考试数学试题广西南宁市第三中学2020-2021学年高二上学期月考(一)数学(理)试题广东省佛山市第一中学2020-2021学年高二(重点班)上学期第一次段考数学试题广东省佛山市第一中学2020-2021学年高二上学期第一次段考数学试卷(已下线)第31讲 立体几何中的最大角和最小角定理-2022年新高考数学二轮专题突破精练
名校
10 . 如图,在矩形
中,
,
,
为
边的中点,沿
将
折起至
,设二面角
为
,直线
与平面
所成角为
,若
,则在翻折过程中( )
![](https://img.xkw.com/dksih/QBM/2020/7/23/2512291004342272/2512956478611456/STEM/3fa18e4a-0377-475b-8a5d-f49a3e9d419b.png?resizew=511)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/305a88d4e0249bd16d48eda01331d2d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a25c28359f8d8da9eaf4672a6cf8ae4f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68696b781af2609327222d22cb7bab3f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4c35e8cf7b77cda3a23aaca62cd937f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9b123ae31090740589ba27a846620b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01ff27eea7545bb06f9472f91290c54e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4a81beb143362a9a1ee20bfc13cf9d4.png)
![](https://img.xkw.com/dksih/QBM/2020/7/23/2512291004342272/2512956478611456/STEM/3fa18e4a-0377-475b-8a5d-f49a3e9d419b.png?resizew=511)
A.存在某个位置,使得![]() |
B.存在某个位置,使得![]() |
C.![]() |
D.![]() |
您最近一年使用:0次
2020-07-24更新
|
397次组卷
|
3卷引用:浙江省金华十校2019-2020学年高二下学期期末数学试题