1 . 在四棱锥
中,底面
是边长为2的正方形,
,
.
(1)证明:平面
⊥平面
.
(2)若
,求
与平面
所成角的正弦值.
![](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/9e74e05a9adf6a1f7a10edd0ac720311.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/feedf3c1dee6e7befebf368c092ccd0c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/9/ff9f43b4-2dc1-44c3-b4db-2142cd6afc1c.png?resizew=140)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62974d34de3a12418d6b700420afd1b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
您最近一年使用:0次
名校
解题方法
2 . 如图,已知菱形
和矩形
所在的平面互相垂直,
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a58a622e2b1a239f2f96aa1501e9799.png)
.
(1)求直线
与平面
的夹角;
(2)求点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd4b93d7abcfc4c3df48f03aa969c17f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19bebae04c72b934bfbbf0b4d01f164f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a58a622e2b1a239f2f96aa1501e9799.png)
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/7/5/6f173dda-36b4-4a96-a0e1-974465d00002.png?resizew=169)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/274cf35acb4a1748d15c39d15a9bea7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/128c69eb81dae89c6989d06d20925ad2.png)
您最近一年使用:0次
2023-07-04更新
|
2091次组卷
|
21卷引用:陕西省商洛市洛南中学2019-2020学年高二上学期期末数学(理)试题
陕西省商洛市洛南中学2019-2020学年高二上学期期末数学(理)试题陕西省宝鸡市渭滨区2018-2019学年高二上学期期末数学(理)试题山东省菏泽市单县第五中学2020-2021学年高二上学期第一次月考(10月)数学试题山东省潍坊市寿光市现代中学2020-2021学年高二(上)期中数学试题山东省寿光现代中学2020-2021学年高二11月月考数学试题(已下线)专题07 空间向量与立体几何-【备战高考】2021年高三数学高考复习刷题宝典(压轴题专练)辽宁省沈阳市第八十三中学2021-2022学年高二上学期开学考试数学试题海南省三亚华侨学校(南新校区)2021-2022学年高二10月月考数学试题辽宁省大连市第二十三中学2021-2022学年高二上学期10月月考数学试题黑龙江省哈尔滨市第九中学校2021-2022学年高二上学期期中数学试题第三章空间向量与立体几何单元测试 2021-2022学年高二上学期数学北师大版(2019)选择性必修第一册人教A版(2019) 选修第一册 数学奇书 第一章 空间向量与立体几何 1.4.2 用空间向量研究距离、夹角问题 第2课时 用空间向量研究夹角问题人教A版(2019) 选修第一册 第一章 阶段测评(一)空间向量与立体几何(已下线)模块三 专题4 空间向量的应用2 空间的距离 B能力卷(已下线)1.4.2 用空间向量研究距离、夹角问题(重难点突破)-【冲刺满分】2023-2024学年高二数学重难点突破+分层训练同步精讲练(人教A版2019选择性必修第一册)(已下线)模块三 专题6 空间的距离 B能力卷 (人教B)黑龙江省哈尔滨市第九中学校2023-2024学年高二上学期9月考试数学试题海南省农垦中学2023-2024学年高二上学期第一次月考数学试题广东省湛江市第二十中学2023-2024学年高二上学期11月期中数学试题(已下线)第05讲 空间向量及其应用(十六大题型)(讲义)-4(已下线)1.4.2 用空间向量研究距离、夹角问题【第一练】
解题方法
3 . 如图,在直三棱柱
中,
,
,且二面角为
为45°.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/19/ee9e6dea-107e-4d81-a724-7e7a7b59fb0f.png?resizew=139)
(1)求棱AC的长;
(2)若D为棱
的中点,求平面
与平面
夹角的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/141ef400af3ec09829c4a640867acea9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/185729402f3b20ac3e0b003be9b385eb.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/19/ee9e6dea-107e-4d81-a724-7e7a7b59fb0f.png?resizew=139)
(1)求棱AC的长;
(2)若D为棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0186d11008c7d66c85ed0d8d2e568908.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9afac7c616bbb14e1ed428a3c507c7dc.png)
您最近一年使用:0次
2023-02-17更新
|
923次组卷
|
6卷引用:陕西省商洛市2022-2023学年高二上学期期末理科数学试题
陕西省商洛市2022-2023学年高二上学期期末理科数学试题河北省邯郸市2022-2023学年高二上学期期末数学试题辽宁省名校联盟2022-2023学年高三下学期质量检测考试数学试题(已下线)山东省日照市2023届高三一模考试数学试题变式题17-22河北省邯郸市鸡泽县第一中学2024届高三上学期第二次月考数学试题(已下线)第一章 空间向量与立体几何(单元基础卷)-【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
4 . 在正方体
中,
,
,则异面直线BE与
所成角的余弦值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81337f03eccf6fadd0b5bd5d9e7fb03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c45d7062ac11ac0522418c8b1563b22f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fc725182c2fd1413319fea35b95c7dc.png)
您最近一年使用:0次
2023-02-17更新
|
293次组卷
|
3卷引用:陕西省商洛市2022-2023学年高二上学期期末理科数学试题
解题方法
5 . 如图,
和
所在平面垂直,且
,则下列结论不正确的是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/88b3553b-47b5-45fe-92cf-ccfca8325c21.png?resizew=139)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0005e1ef60f6ddc5f9a83e3de1ef3b2e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc1323635499de4de83e508888f0fdc1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/88b3553b-47b5-45fe-92cf-ccfca8325c21.png?resizew=139)
A.直线![]() ![]() ![]() |
B.直线![]() ![]() ![]() |
C.直线![]() ![]() ![]() |
D.三棱锥![]() ![]() |
您最近一年使用:0次
名校
6 . 如图,在三棱锥
中,
平面
,点
分别是
的中点,且
.
![](https://img.xkw.com/dksih/QBM/2022/7/10/3019366631120896/3021874838413312/STEM/ffc15567b3644eda95026593e35438fa.png?resizew=152)
(1)证明:
平面
.
(2)若
,求平面
与平面
夹角的余弦值.
![](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/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1679c3594dd9e0ef6827c00f0ccee296.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/66fae8e33cd86fa8dab72704eaafe1ba.png)
![](https://img.xkw.com/dksih/QBM/2022/7/10/3019366631120896/3021874838413312/STEM/ffc15567b3644eda95026593e35438fa.png?resizew=152)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0628681907ac8d7fdb94d8bc1b15feb9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a0ece2314dba34c13f1b46ee6171ea4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53bdef2e7a7929ad6190302ab44c46c0.png)
您最近一年使用:0次
2022-07-13更新
|
782次组卷
|
5卷引用:陕西省商洛市2021-2022学年高二下学期期末理科数学试题
解题方法
7 . 如图,在四棱锥
中,
平面
,底面
为矩形,
,
,
为
的中点,
.请用空间向量知识解答下列问题:
![](https://img.xkw.com/dksih/QBM/2022/2/18/2919033044123648/2935400809611264/STEM/dc973872-9b6a-469a-b075-969907672a2f.png?resizew=139)
(1)求线段
的长;
(2)若
为线段
上一点,且
,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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.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/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c527cc1c57a471c1f8442aa9dcb84d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4486d52b6e410fd7b60428121d96cef.png)
![](https://img.xkw.com/dksih/QBM/2022/2/18/2919033044123648/2935400809611264/STEM/dc973872-9b6a-469a-b075-969907672a2f.png?resizew=139)
(1)求线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
(2)若
![](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/06fa0a286a55692e4263a5993b01580b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7df0e2a0b9e504abfc28536d9854133d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/564376a88fa74090de9f7694226a6184.png)
您最近一年使用:0次
2022-03-13更新
|
240次组卷
|
2卷引用:陕西省洛南中学2022-2023学年高二上学期期末数学(理)试题
8 . 如图,在空间直角坐标系
中,A,D,B分别在x,y,z轴的正半轴上,C在平面BOD内.
![](https://img.xkw.com/dksih/QBM/2021/7/8/2759692660793344/2760746237149184/STEM/a4b5452d-5319-49e5-8058-8f6cd2585d4d.png?resizew=246)
(1)若
,证明:
.
(2)已知
,
,C的坐标为
,求BC与平面ACD所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5e336d6ca2cae3d6e6c3810d7e521a4.png)
![](https://img.xkw.com/dksih/QBM/2021/7/8/2759692660793344/2760746237149184/STEM/a4b5452d-5319-49e5-8058-8f6cd2585d4d.png?resizew=246)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a4a26b9ab8f36629aee288b6a0fc77c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7dac702fe64edf1bc265da4b98cf2a0.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b53b6f482db15b1b81842983b7b53218.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a99044cdedf9e67bffd16a7eeeadf9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/738b18d41a5283e5cea450511786a1e8.png)
您最近一年使用:0次
2021-07-09更新
|
167次组卷
|
4卷引用:陕西省商洛市2020-2021学年高二下学期期末理科数学试题
9 . 如图,
平面
,四边形
为直角梯形,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/8aa69148-37f4-4e80-9b7c-18d091fb1a64.png?resizew=201)
(1)证明:
.
(2)若
,点E在线段
上,且
,求二面角
的余弦值.
![](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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d907751d1e01b0954e5563e8d8cbeb2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f571396be1aa4a8914a66f7d7abd6381.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/080db3af81b29ed10144a1c2e2a4fb8a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/8aa69148-37f4-4e80-9b7c-18d091fb1a64.png?resizew=201)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8c231fb9aeaf4b73c2d835bb4c3d42b.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e4e97a4bd7675f12f73266254dd435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/297f713ddbcc4578e73c8afe3a52abfa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d2ed7474932ac3959108f2b835acf98.png)
您最近一年使用:0次
2021-03-24更新
|
344次组卷
|
7卷引用:陕西省商洛市2020-2021学年高二上学期期末理科数学试题
解题方法
10 . 如图,已知三棱柱
是底面边长为2,高为4的正三棱柱,点E在棱
上,且
.
![](https://img.xkw.com/dksih/QBM/2021/1/20/2640312795389952/2641467283161088/STEM/9524cb70626f41258d0e63d06b993cab.png?resizew=188)
(1)当
为何值时,平面
平面
?说明你的理由.
(2)若
,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8f00d5195d6eb715ba458578d94f0dc.png)
![](https://img.xkw.com/dksih/QBM/2021/1/20/2640312795389952/2641467283161088/STEM/9524cb70626f41258d0e63d06b993cab.png?resizew=188)
(1)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3837007567ab66f5cbe93ea39d6b259.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ac61c24f99a4e466f1e2ea011893866.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73b3cf0f585938ede9eca890a6eb326d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/38fb0140df15986ab1fcbaa1910d6bc3.png)
您最近一年使用:0次
2021-01-22更新
|
98次组卷
|
3卷引用:陕西省商洛市2020-2021学年高三上学期期末理科数学试题