解题方法
1 . 已知平行六面体
的底面
是边长为1的正方形,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/19/4ce8da33-c421-45be-84bf-82dcd2869eac.png?resizew=181)
(1)求对角线
的长;
(2)求直线
与
所成角的余弦值.
![](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/d9c904ca1cb65b17b3521df640071010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92535536bd3c2761724fd058427f95a8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/19/4ce8da33-c421-45be-84bf-82dcd2869eac.png?resizew=181)
(1)求对角线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e26d9636ad77369535852c6e4493446a.png)
您最近一年使用:0次
解题方法
2 . 在正四棱柱
中,
,
,
在线段
上,且
.建立如图所示的空间直角坐标系
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/b93eaf0d-e85f-4c37-938a-bf90ecb9b1dc.png?resizew=134)
(1)求
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e55a2310cbba5e050488cd9296eb195d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f92d8e0c3c68eecfdfad9fa8381adc4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c76ee17afa983fa795545b5568b80089.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/21/b93eaf0d-e85f-4c37-938a-bf90ecb9b1dc.png?resizew=134)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af3e5c5e7d8e581b6b26d8d2eb597e1f.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ce1b066f8869d0ff4513f7a99745125.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/152cfd5011c94e02c1a9cbbd4d8f58bb.png)
您最近一年使用:0次
名校
3 . 如图,在四面体
中,底面ABC是边长为1的正三角形,
,点P在底面ABC上的射影为H,
,二面角
的正切值为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/3/b163ccc3-5d33-4632-973d-143b3937f0da.png?resizew=146)
(1)求证:
;
(2)求异面直线PC与AB所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d975f472e1663622e2b7629a3f5ff95.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97145e11dfb0e127164187f11288e6b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10f7a0ab16cbb95691b3d80334a91401.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2967337e3fcb228dded64ab0c41a17e0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/3/b163ccc3-5d33-4632-973d-143b3937f0da.png?resizew=146)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a15a004f7d47ed595f063e60075223a.png)
(2)求异面直线PC与AB所成角的余弦值.
您最近一年使用:0次
名校
解题方法
4 . 已知正三棱锥
中的三条侧棱
两两垂直.
(1)证明:
.
(2)已知点E满足
,求平面
与平面
夹角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/766565857d28617cc4c2a26ecf76ec24.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/1/15/1dd056f1-f052-463d-8b24-a00825944a53.png?resizew=157)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b5f215a42c4b7078d8d65923eb9980e.png)
(2)已知点E满足
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e9281815da35c2bdd24c21762d5fb6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
您最近一年使用:0次
2023-12-14更新
|
95次组卷
|
4卷引用:河南省商丘市虞城县高级中学2023-2024学年高二上学期第二次月考数学试题
名校
5 . 已知向量
,
.
(1)求
与
的夹角余弦值.
(2)若
,求实数
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef57e834afea5f8d451c899ad4bb1113.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d970b8cd07e30a1242db2618ce8bad7.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64c5562bd4d1b54424330cb6329cd79d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b45ba716f03748c19b7ce2f99af536ab.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0664efa38f444449312cea70d31eb594.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2023-12-01更新
|
211次组卷
|
3卷引用:河南省郑州市基石中学2023-2024学年高二上学期1月月考数学试题
名校
解题方法
6 . 如图1,已知在矩形
中,
,
,
为
的中点.将
沿
折起,使得平面
平面
,如图2.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/31/c6be3a88-713d-455a-8e13-51538b0f8402.png?resizew=316)
(1)求证:平面
平面
;
(2)设
,
.
①是否存在
,使
?
②当
为何值时,二面角
的平面角的余弦值为
?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080ca48cd27d4bf9d9ef084b558fc17a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a88c44f558705de3bcefcfc0ece96b8f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7f9fba8a4098c1a0515286eb8d616dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d50703c46b6153945d718b198f03b4b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bb5012f6c70a1e98d682b6d021fadd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0760712e3e2ea02b755b751e760d0c55.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/31/c6be3a88-713d-455a-8e13-51538b0f8402.png?resizew=316)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bb5012f6c70a1e98d682b6d021fadd8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc46688d8723cf2003fc25890265200.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f7f70c4748990ef43f780f7b9302072.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79296cd4046a71e163a8f3e647a176ae.png)
①是否存在
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c46c4f823070b37466d31e7a6162eb44.png)
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a5266895d3c1fcb350a745bc779433b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dee14db57f0c762aad845cf5b4a243c0.png)
您最近一年使用:0次
2023-11-29更新
|
106次组卷
|
2卷引用:河南省济源市济源第一中学2024届高三上学期期中数学试题
名校
解题方法
7 . 如图所示,在棱长为2的正方体
中,E,F分别是棱
,
上的动点,且
,其中
,以O为原点建立空间直角坐标系
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/15/c93924cc-4252-4090-9745-809671340e15.png?resizew=171)
(1)求证:
;
(2)若
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/95628327dc58037e5368f4404c05ec39.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/582fca0c1348fbbf733909680affa238.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/966d9dd819cba29980da3700422c2497.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e336d6ca2cae3d6e6c3810d7e521a4.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/12/15/c93924cc-4252-4090-9745-809671340e15.png?resizew=171)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03022e8d9e2d2f962c6baa39463c6714.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ecef37023a8b8183771db35dcfbc973.png)
您最近一年使用:0次
2023-11-19更新
|
136次组卷
|
4卷引用:河南省环际大联考“逐梦计划”2023-2024学年高二上学期期中考试数学试题
河南省环际大联考“逐梦计划”2023-2024学年高二上学期期中考试数学试题宁夏回族自治区银川市贺兰县第一中学2023-2024学年高二上学期期末复习数学试题(三)(已下线)专题12 空间向量的坐标表示8种常见考法归类-【寒假自学课】2024年高二数学寒假提升学与练(苏教版2019)(已下线)专题01 空间向量与立体几何(4)
名校
8 . 如图,在直三棱柱中,线段
,
,
的中点分别为
,
,
.已知
,
,
.
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/283c3fc73a940596592e929b6098b5d9.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa6337f20df1bf8d91895343684c4c49.png)
您最近一年使用:0次
2023-11-19更新
|
361次组卷
|
3卷引用:河南省太康县第一高级中学等校2023-2024学年高二上学期期中学业质量监测考试数学试题
河南省太康县第一高级中学等校2023-2024学年高二上学期期中学业质量监测考试数学试题江西省部分学校2023-2024学年高二上学期11月期中考试数学试题(已下线)3.3 空间向量的坐标表示(九大题型)(分层练习)-2023-2024学年高二数学同步精品课堂(沪教版2020选择性必修第一册)
解题方法
9 . 在长方体
中,
,
是
的中点.以
为原点,
、
、
所在直线分别为
轴、
轴、
轴,建立如图所示的空间直角坐标系.
(1)写出
在平面
上的投影向量的坐标;
(2)求点
到平面
的距离;
(3)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4d0432a2fc0e82790bbb560b17888e1.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/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d822262ff00915910e5b87d81ad1ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e52a8f07834cbbbe4224962672fbbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22adbc0da438220f9cace11b629d799b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/11/30/23afbc7b-32c7-4939-8ab1-b8cea15b76e0.png?resizew=166)
(1)写出
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab9aad43adb48b03fab99a9670b7eda7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ebb05874eb3353d754af24c9974273e.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0758f3ff9f1f7109024c1ef65536c58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7850e88507969a07a9515347b97c7b6e.png)
(3)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69a7bcc1efb8a2ff57d64b6d057da463.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7850e88507969a07a9515347b97c7b6e.png)
您最近一年使用:0次
2023-11-09更新
|
159次组卷
|
2卷引用:河南省信阳市商城县上石桥高级中学2023-2024学年高二上学期12月月考数学试题
10 . 已知向量
,求:
(1)
;
(2)
;
(3)
;
(4)
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5bde969007c65b2b6304ef0d53bc629d.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14b5bbe37cc6de8ceb50091f49ce8ef3.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1669d094b7eaa23544db2e3b85d766a.png)
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa707c74a63baeb2e72e3fd0bc2e884f.png)
(4)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beaefc47c401809b42f5e980f880dd9d.png)
您最近一年使用:0次
2023-09-17更新
|
256次组卷
|
2卷引用:河南省柘城县德盛高级中学2023-2024学年高二上学期9月月考数学试题