名校
解题方法
1 . 将正方形
沿对角线折成直二面角
,以下结论中错误 的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f1854ba6cc92481d7a616bd2788a47e.png)
A.![]() | B.![]() |
C.![]() ![]() | D.![]() ![]() |
您最近一年使用:0次
2 . 在三棱柱
中,
,平面
平面
,
分别为棱
的中点,如图:
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/21/cce4fc8f-3773-44a9-a5a8-8ca21ea6d283.png?resizew=181)
(1)求证:
平面
;
(2)若
,
①求
与平面
所成角的正弦值;
②求线段
在平面
内的投影
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5a1d8b135a43429bba122bb000ca83e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3e34cc1159ab9198480cd0b585620d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9369aed2d8309af46ac3eaffb9cce537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d172b97111c32fa11369a6c59719c8f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/21/cce4fc8f-3773-44a9-a5a8-8ca21ea6d283.png?resizew=181)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17e5e2ba78a5b1dd0f39bb65d2a0a0f8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab3e0dba5705e1d749cfb21ebbb2ed93.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0ff310aabd2282b539537ebed3f788.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39bfd8e9f2f08a5807a23677988b240b.png)
②求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39bfd8e9f2f08a5807a23677988b240b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fae626b30192bba5c433d399bba65411.png)
您最近一年使用:0次
2023-12-21更新
|
289次组卷
|
2卷引用:北京市西城区北师大附属实验中学2024届高三上学期12月月考数学试题
名校
解题方法
3 . 已知正四棱锥
的
条棱长均相等,
为顶点
在底面内的射影,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd3304e23f3b0f9569c4140ca89b6498.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
A.侧棱![]() ![]() ![]() |
B.侧面![]() ![]() ![]() |
C.设![]() ![]() ![]() ![]() |
D.设![]() ![]() ![]() ![]() |
您最近一年使用:0次
4 . 在正方体
中,异面直线
与
所成的角的大小是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/17/ebe735bd-f2d2-46e3-8c11-26639db9c761.png?resizew=149)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d8772aa893a9c1d40f714cb25701701.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/17/ebe735bd-f2d2-46e3-8c11-26639db9c761.png?resizew=149)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
5 . 如图,在平行六面体
中,若
,
,
则
( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/19/d023fe63-2a66-4580-bddd-19bd8992e076.png?resizew=179)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7b9d8a08fc52c31cc1a7f527d18b55c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/184359fe3cadc363cf4ebe586c2b3db4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2410e0e103cc41264a2d0f5c0e3f3ed4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5d2a7f877147467f6c387b0a54168a8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/19/d023fe63-2a66-4580-bddd-19bd8992e076.png?resizew=179)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
6 . 在长方体
中,已知
与平面
和平面
所成的角均为
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/87cdc08e1c4a04a18d5ecea03393e36d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
A.![]() | B.![]() ![]() ![]() |
C.![]() | D.![]() ![]() ![]() |
您最近一年使用:0次
名校
解题方法
7 . 如图,在直三棱柱
中,
,
,E,F分别为
,
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/4/ab73a48c-bf6a-4ab1-80e2-074be61af908.png?resizew=153)
(1)求异面直线
与
所成角的余弦值;
(2)求点
到平面
的距离;
(3)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f90e17995e2f71e297d94ae51c7e5b1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c06154cae3bf7a8ce5a1e97a7380875.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/4/ab73a48c-bf6a-4ab1-80e2-074be61af908.png?resizew=153)
(1)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
(3)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d24903da82c11c415b155062561ebda9.png)
您最近一年使用:0次
2023-12-08更新
|
815次组卷
|
3卷引用:北京市第一六一中学2023-2024学年高二上学期12月阶段练习数学试题
名校
8 . 如图,在四棱锥
中,平面
平面
,底面
为矩形,
,
为等边三角形,则直线
与平面
所成角的正弦值为______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e4aa9084b8fe0fe05c4388d1f835587b.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/0a5546121164a27a65f68610e3ac9263.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
您最近一年使用:0次
2023-12-08更新
|
347次组卷
|
3卷引用:北京市第一六一中学2023-2024学年高二上学期12月阶段练习数学试题
北京市第一六一中学2023-2024学年高二上学期12月阶段练习数学试题上海市金山中学、闵行中学、崇明中学、嘉定一中四校联考2023-2024学年高二年级下学期期中考试数学试题(已下线)专题13.5空间平面与平面的位置关系-重难点突破及混淆易错规避(苏教版2019必修第二册)
名校
9 . 在空间直角坐标系中,
,
,
,则
是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89fa74d66ae11cfbb99fd61e05b2e1e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b01219eb874a5d318c8869e9a25eded.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bca70232ae066f54fc45795448bdc3c0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.锐角三角形 | B.直角三角形 |
C.钝角三角形 | D.形状不确定 |
您最近一年使用:0次
2023-12-08更新
|
320次组卷
|
2卷引用:北京市第一六一中学2023-2024学年高二上学期12月阶段练习数学试题
名校
解题方法
10 . 如图,在三棱锥
中,
平面
.
(1)求证:
平面
;
(2)求二面角
的大小;
(3)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a860d79817ea167da8c893605229ada.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/30/f9d948b9-240a-463a-9647-7a1b9be55396.png?resizew=153)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b33b7213d99a817bff19bcf740a0697c.png)
(3)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e582d73b96ba649378379c3074d506d.png)
您最近一年使用:0次
2023-11-09更新
|
716次组卷
|
3卷引用:北京市第一六一中学2024届高三上学期12月阶段测试数学试题