名校
1 . 如图,已知正三棱柱
分别为棱
的中点.
平面
;
(2)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08779b8f171e17017a891f876df7fc0c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90fdf6f784f618a70fb4768f74aa970b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e16f65c3a318220c2f5baac171bbb61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41104641f3e2260d00aeadf8fb8a078a.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14588eb195962ce563e0c7a551510a48.png)
您最近一年使用:0次
2024-03-31更新
|
2842次组卷
|
3卷引用:浙江省9+1联盟2023-2024学年高三下学期3月高考模拟数学试卷
解题方法
2 . 已知空间中三点
,则正确的有( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46a601d61ea9d1030c567b9f32b8bb99.png)
A.![]() ![]() |
B.![]() ![]() |
C.![]() ![]() ![]() |
D.平面![]() ![]() |
您最近一年使用:0次
2024-03-29更新
|
232次组卷
|
2卷引用:云南省沧源佤族自治县民族中学2022-2023学年高二上学期教学测评月考(一)数学试题
名校
解题方法
3 . 如图,在正方体
中,点M,N分别是棱
上的点,且
,
,则异面直线AM与CN所成角的余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3da8c338342e38c9aa3f274c053fd5b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f650481726f091d693138126453e050.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/89628f63e5d377417669602f8fe2bdd1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b9fc281569c12d22f857fb15c1e42d1.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
名校
解题方法
4 . 在四棱锥
中,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
,平面
平面
,
.
到平面
的距离;
(2)在线段
上是否存在点
,使二面角
的正弦值为
?若存在,请确定点
的位置;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faeb97acf19bd3b2c6c77c2814df4d2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/638537c0a30676c73fea76c80e0f8bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cc368dc2d34747707be012d30c4d3371.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235d1553f6806c1eee3b17b94d23f0f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/083db0cf99a570e687890c988d3010ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e7c75ebef26c395f9f85670edbe6f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc6f6dfdbe7d39891c35f67e1a95c7f.png)
(2)在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d4db9b82b67efe45a02fca32bfcf5dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7de7cb1d10dd759c0ebd487e4ca34ac8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d1f5689dd4bf7b734b53f29d7706ada.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
您最近一年使用:0次
2024-03-29更新
|
296次组卷
|
4卷引用:江苏省南通市2023-2024学年高二下学期3月质量监测数学试题
江苏省南通市2023-2024学年高二下学期3月质量监测数学试题江苏省清江中学、南通部分学校2023-2024学年高二下学期第一次调研(3月)数学试卷(已下线)模块四 期中重组卷2(江苏南通)(苏教版)(高二)(已下线)专题01 空间向量与立体几何解答题必考题型(6类题型)-备战2023-2024学年高二数学下学期期末真题分类汇编(江苏专用)
5 . 如图,在四棱锥
中,
平面
,
,
,
是等边三角形,
为
的中点.![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
平面
;
(2)若
,求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f30533da2e1d2a958dc906c37eba9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e106f4233be16e98f2c1bf9f1635622.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a11029ca6b4b9e7f777af0280cf163c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a301baf6cc0628366e6661a87a2d93ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3da7bcea5a45eeae211f5851f12a7517.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fd17a66a2af938c89e46f22e4d893b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1633988fd62a652de726ee92a917b52d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/218054144a13435580cd132b9459546c.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c19f0fcacac715a1200770516d1e4a67.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
您最近一年使用:0次
2024-03-27更新
|
487次组卷
|
2卷引用:黑龙江省齐齐哈尔市2024届高三下学期二模考试数学试题
名校
解题方法
6 . 已知四棱锥P-ABCD的底面是正方形,AP⊥平面ABCD,
,
,E为PB的中点,点F满足
,则异面直线EF,CD所成角的余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56e5a8fdbfbdf25f6937b7a2d6a4cd95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8170e26cb69c4b3688383fadc1738a1.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-03-26更新
|
157次组卷
|
2卷引用:江西省部分学校2023-2024学年高二下学期3月联考数学试卷
名校
解题方法
7 . 如图,圆柱
内有一个直三棱柱
,三棱柱的底面三角形内接于圆柱底面,已知圆柱
的轴截面是边长为6的正方形,
,点
在线段
上运动.
;
(2)当
时,求
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192f4f9446c954a291f779d963f90257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192f4f9446c954a291f779d963f90257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d578f3f76ecdf60533db75911aa373db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/192f4f9446c954a291f779d963f90257.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db7ef46a372d4c6481a7bc245c5d0aa2.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b471ac73c479b47b59564ac0f644d2e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a571745474520e3db9cb68c76585f63.png)
您最近一年使用:0次
2024-03-26更新
|
1423次组卷
|
4卷引用:广东省韶关市2024届高三综合测试(二)数学试题
广东省韶关市2024届高三综合测试(二)数学试题广东省佛山市南海区桂城中学2024届高三下学期4月月考数学试题(已下线)模块4 二模重组卷 第3套 全真模拟卷2024届吉林省吉林市第一中学高三一模数学试题
解题方法
8 . 如图,四棱锥
的底面
是正方形,
平面
,
,点
分别是棱
,
的中点,点
是线段
上一点.
平面
;
(2)求平面
与平面
的夹角的余弦值;
(3)若直线
与平面
所成的角的正弦值为
,求此时
的长度.
![](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/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b366eb3c3c2c1e7be9c0d52d770ee1f6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45fbffb9e2c7fa7c5006cde8da0cabe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebce46aeb97373353179e5669365fa4a.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebce46aeb97373353179e5669365fa4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(3)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/907d5147cea4c9ce855074864fe54506.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3d9662368fd788afb77b79035cdd268b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c884b508394b3ab50734b584d9ec783c.png)
您最近一年使用:0次
2024-03-25更新
|
896次组卷
|
2卷引用:天津和平区2024届高三一模数学试题
名校
9 . 如图1,已知
是直角梯形,
,
,
,C、D分别为BF、AE的中点,
,
,将直角梯形
沿
翻折,使得二面角
的大小为
,如图2所示,设N为
的中点.
;
(2)若M为AE上一点,且
,则当
为何值时,直线BM与平面ADE所成角的余弦值为
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369eb8ad56da7dc1cdb7c43762be4bee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b25eff69a4a0dc7a7ab183843303d333.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a64f0bc01c1dbf0b4b87763141d8059.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/085b59baa6aaeab11a2efda83603724b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4901a7eda97d6a307db76c4fb196ba3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/369eb8ad56da7dc1cdb7c43762be4bee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61bfc65bfbc357d43069e9aad18f8625.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2d5bca00fa20e6e80480b9d06d2e52ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bdadcc147a7e441decf7561c9e7310e.png)
(2)若M为AE上一点,且
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/668c259a8971e91fcc2867bed20ca3bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d172f55bc57ef5b5c2c1ad5b167440b2.png)
您最近一年使用:0次
2024-03-25更新
|
367次组卷
|
4卷引用:江苏省洪泽中学等七校2023-2024学年高二下学期第一次联考数学试卷
江苏省洪泽中学等七校2023-2024学年高二下学期第一次联考数学试卷河南省信阳高级中学2023-2024学年高二下学期4月测试(一)数学试题(已下线)模块4 二模重组卷 第2套 复盘卷(已下线)专题01 空间向量与立体几何解答题必考题型(6类题型)-备战2023-2024学年高二数学下学期期末真题分类汇编(江苏专用)
解题方法
10 . 如图,棱长为
的正方体
的内切球为球
,
,
分别是棱
,
的中点,
在棱
上移动,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61128ab996360a038e6e64d82fcba004.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.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/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
A.对于任意点![]() ![]() ![]() |
B.直线![]() ![]() ![]() |
C.过直线![]() ![]() ![]() |
D.当![]() ![]() ![]() ![]() ![]() ![]() |
您最近一年使用:0次