名校
解题方法
1 . 如图,在四棱锥
中,四边形
是边长为3的正方形,
平面
,
,点
是棱
的中点,点
是棱
上的一点,且
.
平面
;
(2)求平面
和平面
夹角的大小.
![](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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c2a03ce143556f9770f6f665bf2ce448.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8459bfe1dd87957f217ffcd0d10f6f92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4a46fbde58e12b1edc038ae9e921722.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6a0d238b6e9b49bbea22a79402e8e4f.png)
您最近一年使用:0次
2023-07-22更新
|
487次组卷
|
6卷引用:山西省朔州市怀仁市第一中学校2022-2023学年高二下学期期末数学试题
解题方法
2 . 在三棱锥
中,
,
,
,取直线
与
的方向向量分别为
,
,若
与
夹角为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/20/57cd39b0-4a40-497c-8531-c1b80a5f3b94.png?resizew=176)
(1)求证:
;
(2)求平面
与平面
的夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d4357d5744046d4d44abb09e1ee35fcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7aa1162d5481e2441fe5bc0d49a576b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/898027b3a15449c897b28ed79cdf71f7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/083a20abb668d4c26fe5039bd108b40a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc1070a28cb9cb8553c29747d1993b16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/083a20abb668d4c26fe5039bd108b40a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc1070a28cb9cb8553c29747d1993b16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/20/57cd39b0-4a40-497c-8531-c1b80a5f3b94.png?resizew=176)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f1335634179c8f830d42dda17c05a559.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7abd284f76d9f5769bc189508ce2572b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
您最近一年使用:0次
名校
解题方法
3 . 如图,在四棱柱ABCD-A1B1C1D1中,侧棱A1A⊥平面ABCD,AB∥DC,AB⊥AD,AD=CD=2,AA1=AB=4,E为棱AA1的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/13/33bf0b9c-bee0-4925-84e7-8025c208ac5e.png?resizew=168)
(1)证明:BC⊥C1E.
(2)设
=λ
(0<λ<1),若C1到平面BB1M的距离为
,求λ.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/13/33bf0b9c-bee0-4925-84e7-8025c208ac5e.png?resizew=168)
(1)证明:BC⊥C1E.
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1eecfe95150ef2fbfb2f276a0d637b54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0735144f6e24b6b32028ff14c17c1cec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9868f77d5ab5073b6145f1c6d272122e.png)
您最近一年使用:0次
2023-02-11更新
|
452次组卷
|
6卷引用:山西省忻州市河曲县中学校2022-2023学年高二下学期开学考试数学试题
名校
4 . 下列四个命题中正确的是( )
A.已知![]() ![]() ![]() |
B.![]() ![]() ![]() ![]() |
C.已知向量![]() ![]() ![]() ![]() ![]() |
D.直线l的方向向量为![]() ![]() ![]() |
您最近一年使用:0次
2023-11-14更新
|
411次组卷
|
4卷引用:山西省临汾市2023-2024学年高二上学期期中数学试题
名校
解题方法
5 . 如图,在棱长为2的正方体
中,点M是
的中点.
(1)求
到平面
的距离;
(2)求证:平面
平面
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/18/d3e1a303-e12c-4846-8390-3ab8ba23d0ad.png?resizew=162)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc46688d8723cf2003fc25890265200.png)
(2)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6fb16d2f0db758b8b7a8d3743143f48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a935b7d21a103a264b6e96ecf82dbe4a.png)
您最近一年使用:0次
2023-11-17更新
|
401次组卷
|
6卷引用:山西省大同市第一中学校2023-2024学年高二上学期12月月考数学试题
名校
解题方法
6 . 如图,在斜四棱柱
中,底面
是边长为1的正方形,
,记
.
![](https://img.xkw.com/dksih/QBM/2023/10/10/3342973715734528/3344512309739520/STEM/07d74803f6384d7c97e7de6c3528746d.png?resizew=179)
(1)证明:
;
(2)求侧棱
的长.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e42d2046a0e800a6bf082172027612e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dfb9769a14ebf5cbc5fa0c06ce96435.png)
![](https://img.xkw.com/dksih/QBM/2023/10/10/3342973715734528/3344512309739520/STEM/07d74803f6384d7c97e7de6c3528746d.png?resizew=179)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aa142bb96af98b846997e681609739f.png)
(2)求侧棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
您最近一年使用:0次
2023-10-12更新
|
372次组卷
|
5卷引用:山西省运城市稷山县稷山中学2023-2024学年高二上学期11月月考数学试题
名校
解题方法
7 . 已知正方体
棱长为
为棱
中点,
为正方形
上的动点,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa67c54003b5768ee0ef107c6becbdfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632f2bf1cd0435041fa04b01901d1c8c.png)
A.满足![]() ![]() ![]() |
B.满足![]() ![]() ![]() ![]() |
C.存在点![]() ![]() ![]() |
D.存在点![]() ![]() |
您最近一年使用:0次
2023-10-11更新
|
362次组卷
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3卷引用:山西省运城市教育发展联盟2023-2024学年高二上学期10月调研测试数学试题
解题方法
8 . 如图所示,正方体
的棱长为
,
、
、
分别为
、
、
的中点,则下列说法正确的是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.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/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/26/4dd40306-533e-4088-89e5-4865b61ed853.png?resizew=154)
A.直线![]() ![]() |
B.直线![]() ![]() |
C.平面![]() ![]() |
D.点![]() ![]() ![]() |
您最近一年使用:0次
9 . 已知直线
的一个方向向量为
,平面
的一个法向量为
,若
,则实数
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fdcac85aadec3b346184e2ae1ea86f87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01141c574bdbe438f6a443de4e5c76a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/749a36b37211099584b1e475b327a2b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
A.![]() | B.![]() | C.1 | D.2 |
您最近一年使用:0次
2023-11-19更新
|
353次组卷
|
3卷引用:山西省吕梁市2023-2024学年高二上学期11月期中数学试题
山西省吕梁市2023-2024学年高二上学期11月期中数学试题(已下线)考点10 空间向量的应用 2024届高考数学考点总动员【练】河北省邯郸市五校2023-2024学年高二上学期二调考试(12月)数学试题
10 . 如图,直三棱柱
的所有棱长均相等,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/4/0ec183de-53c9-46e2-93f3-d8f53e867669.png?resizew=130)
(1)证明:
;
(2)设
分别是棱
上的点,若点
在同一平面上,且
的面积是
的面积的
倍,求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/4/0ec183de-53c9-46e2-93f3-d8f53e867669.png?resizew=130)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9959790095c938b094ddf5953d2b7d2b.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e675a92cad72c65aa4071b9d9e226090.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74deab31f48c443b1cc525e4d9689be1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12225a1a1eda07908309f8100cc34726.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ca7d1107389675d32b56ec097464c14.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c0a845e9a772c02b1e5b658b4b1f027.png)
您最近一年使用:0次