12-13高二上·福建泉州·期中
名校
1 . 如图,已知三棱锥
的侧棱
两两垂直,且
,
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/2019/3/30/2171535690563584/2172258140790784/STEM/d07e230e25194cf282749bc2dba0d979.png?resizew=211)
求异面直线
与
所成角的余弦值;
求直线
和平面
的所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca03d21059996f815c5e377ddf127368.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84c83984c62d390c6b30efa5d4e560de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b878adb80a03376081361b0512b6f8e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/034150226c5cd24066a4a4faed2137e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://img.xkw.com/dksih/QBM/2019/3/30/2171535690563584/2172258140790784/STEM/d07e230e25194cf282749bc2dba0d979.png?resizew=211)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bf6c84731e5e1bd335ecfc2d36c3d81.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1f53190d6ead827a6338b9de847aeaf1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
您最近一年使用:0次
2018-03-29更新
|
1013次组卷
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10卷引用:甘肃省天水市甘谷第一中学2019-2020学年高二上学期第二次月考数学(理)试题
甘肃省天水市甘谷第一中学2019-2020学年高二上学期第二次月考数学(理)试题(已下线)2012-2013学年福建南安一中高二上学期期中考试理科数学试卷(已下线)2012-2013学年湖南邵阳石齐学校高二第三次月考理科数学试卷福建省福州市长乐高级中学2017-2018学年高二上学期期末考试数学(理)试题【全国百强校】安徽省马鞍山市第二中学2018-2019学年高二第一学期期末素质测试理科数学试题新疆伊西哈拉镇中学2018-2019学年高二上学期期末数学试卷辽宁省联合校2020-2021学年高二上学期第一次月考数学试题辽宁省葫芦岛市第八高级中学2020-2021学年高二上学期实验班第一次月考数学试题山东省济南市商河县第一中学2020-2021学年高二10月月考数学试题辽宁省大连市滨城高中联盟2021-2022学年高二上学期期中数学试题
名校
2 . 如图所示,在四棱锥
中,底面四边形ABCD是菱形,
是边长为2的等边三角形,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/6/3/cb1c8ecc-3d2a-4935-b135-30e9b5ca2d20.png?resizew=184)
Ⅰ
求证:
底面ABCD;
Ⅱ
求直线CP与平面BDF所成角的大小;
Ⅲ
在线段PB上是否存在一点M,使得
平面BDF?如果存在,求
的值,如果不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d02bd5cfe804460846423e77f72db10f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d764b57d52caf3453c11aa009aee6d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1738e419e260a403f33c3f6c74c6d41d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfc6db7cb8d457a006511eb5217e15d5.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/6/3/cb1c8ecc-3d2a-4935-b135-30e9b5ca2d20.png?resizew=184)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e126c16032892966489053f44b9048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11d71379442f28c038d367d49422cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/987517758fad59f6f695761deb2a5ebd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e589e2dff283a5fed007500bc834272.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8180b12d96caf2e6b3ca28a474185e41.png)
您最近一年使用:0次
2018-03-26更新
|
855次组卷
|
10卷引用:甘肃省兰州市第二中学2023-2024学年高二下学期期中考试数学试卷
甘肃省兰州市第二中学2023-2024学年高二下学期期中考试数学试卷2016届天津市河东区高考一模考试理科数学试卷江西省南昌市第三中学2017-2018学年度上学期高二期末考试数学(理)试题福建省尤溪县2018-2019学年普通高中高二上学期半期数学(理)试题2020届福建省宁德高级中学高三第三次月考理科数学试题四川省遂宁市安居区2020-2021学年高二上学期期中考试数学(理)试题福建省上杭一中2020-2021学年高二上学期数学期末模拟卷试题北京九中2019-2020学年高二上学期期中数学试题山东省德州市陵城区祥龙高级中学2022-2023学年高二上学期9月月考数学试题山东省新泰市第一中学2022-2023学年高二上学期期中考试数学试题
名校
解题方法
3 . 四棱台被过点
的平面截去一部分后得到如图所示的几何体,其下底面四边形
是边长为2的菱形,
,
平面
,
.
(1)求证:平面
平面
;
(2)若
与底面
所成角的正切值为2,求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08e1120f005fb701c407fbfd9c1b1302.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6906f59d09ce31956d6f5ea2b23fc77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d25e8fc3dda4f8b45491514b6e22a962.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41fd676c41d2d644928f014b0fea4689.png)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e3a59d7bf91a7540e35ce0011ad9b97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d1a1b7edecd3344707cf04ea3e86916.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98e0254c84e44728749b34c08c28ab1e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/1/219295aa-575d-438f-9e69-95d5110f376b.png?resizew=181)
您最近一年使用:0次
2018-03-18更新
|
506次组卷
|
4卷引用:甘肃省2018届高三第一次诊断性考试数学(理科)试题
甘肃省2018届高三第一次诊断性考试数学(理科)试题甘肃省2018届高三第一次高考诊断性考试数学(理)试题(已下线)2018年高考数学备考中等生百日捷进提升系列(综合提升篇) 专题04 立体几何解答题(理)【全国百强校】安徽省蚌埠市第二中学2018届高三4月月考数学(理)试题
4 . 如图所示,矩形
中,
,
平面
,
,
为
上的点,且
平面
.
![](https://img.xkw.com/dksih/QBM/2018/3/10/1898946809585664/1901453188284416/STEM/b3c35e55e2d845c682ccc4a6da70b94a.png?resizew=132)
(1)求证:
平面
;
(2)求平面
与平面
所成角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/327832ffb5a937d88a1069395a8552af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5dd496ee0c1170ef6dcc48266ee444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55b3581f73c778ecb0931c1ab30392ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4eedae8d316c76e3d0b451256de03fb9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fa3c61d6c19e187b4b824b6f5610cdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c66d99a6a8415ddad22bbed33b64cfb.png)
![](https://img.xkw.com/dksih/QBM/2018/3/10/1898946809585664/1901453188284416/STEM/b3c35e55e2d845c682ccc4a6da70b94a.png?resizew=132)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f4c3f9dd5d0343597a7f58a1989b537.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10fc7991ea17d54ff5f4445ac5699463.png)
您最近一年使用:0次
解题方法
5 . 如图,已知四棱锥
,
平面
,底面
中,
,
,且
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/2018/3/23/1908399770836992/1916037309489152/STEM/ab4c969928c0459ca3d8db2cca0ee9ec.png?resizew=157)
(1)求证:平面
平面
;
(2)问在棱
上是否存在点
,使
平面
,若存在,请求出二面角
的余弦值;若不存在,请说明理由.
![](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/dc1bed9e7cd7aa41d0cb0f9fc1ec5eaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edf7488ccaf26541626131bceb8f1069.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/2018/3/23/1908399770836992/1916037309489152/STEM/ab4c969928c0459ca3d8db2cca0ee9ec.png?resizew=157)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a13de8cbfb0b865ea5a61e7a4ff1abe3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)问在棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c59841953d876e61083ababe8ad616dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/afc93b0a63786bc567699dfdb4014eeb.png)
您最近一年使用:0次
2018-03-07更新
|
950次组卷
|
3卷引用:甘肃省兰炼一中2018届高三下学期第二次模拟理科数学试题
名校
6 . 【2018海南高三阶段性测试(二模)】如图,在直三棱柱
中,
,
,点
为
的中点,点
为
上一动点.
![](https://img.xkw.com/dksih/QBM/2018/4/16/1925363152027648/1931732156841984/STEM/8347705294f341b6a621d13d51cf6ad7.png?resizew=209)
(I)是否存在一点
,使得线段
平面
?若存在,指出点
的位置,若不存在,请说明理由.
(II)若点
为
的中点且
,求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8e9ec412ea0355e4e5cd06c60e5fee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c3e9ef3e849788645552cfb0735d987.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f1f229274a6e17977cc047814212589.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://img.xkw.com/dksih/QBM/2018/4/16/1925363152027648/1931732156841984/STEM/8347705294f341b6a621d13d51cf6ad7.png?resizew=209)
(I)是否存在一点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/edcf19a7f0dd0cdf59516ae585025110.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(II)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b470c4e195cf7a07b7a331ce4b436e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84bd173466089f8e523dc02808239daf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2da84a0e9aac2c68de71c26f2ea4761.png)
您最近一年使用:0次
2018-03-07更新
|
1207次组卷
|
9卷引用:甘肃省会宁一中2018届高三3月份测试理科数学试题
名校
解题方法
7 . 如图,在四棱锥
中,平面
平面
,
,
,
,
,点
在棱
上,且
.
(Ⅰ)求证:
;
(Ⅱ)是否存在实数
,使得二面角
的余弦值为
?若存在,求出实数
的值;若不存在,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0facf189b2a3153beb7b9e077d3b1146.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/da7ae4091a3a2767fde8e9f5a604c1a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09d27bd71d79cb19eb554175e4ef0867.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c18fc2798b3ae9cc19eeb5ff488703e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6822db67464507ee6997b93103003a36.png)
![](https://img.xkw.com/dksih/QBM/2018/2/25/1889951998967808/1895651440132096/STEM/2e8de1c52d1a48579609eb077b768f69.png?resizew=239)
(Ⅰ)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7dac702fe64edf1bc265da4b98cf2a0.png)
(Ⅱ)是否存在实数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fbeab80976db9b4689b9446cda06196a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e64e76a4c1e5934f51cdca2ffbc8313f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df64046e91b047037f19e4032e3b6de3.png)
您最近一年使用:0次
2018-03-05更新
|
1271次组卷
|
5卷引用:甘肃省天水市第一中学2019届高三一轮复习第六次质量检测数学(理)试题
甘肃省天水市第一中学2019届高三一轮复习第六次质量检测数学(理)试题湖北省宜昌市2018届高三年级元月调研考试数学理试题(已下线)2018年高考数学备考中等生百日捷进提升系列(综合提升篇) 专题04 立体几何解答题(理)江西省新余市2019-2020学年高三上学期期末数学(理科)试题广东省汕头市澄海中学2020届高三下学期开学前测试数学试题
8 . 如图,在四棱锥
中,底面
是平行四边形,
,
,
,
底面
.
![](https://img.xkw.com/dksih/QBM/2018/2/25/1889805135708160/1892054452551680/STEM/eb667b660aea4cb2b4e975771c609b95.png?resizew=129)
(1)求证:
平面
;
(2)若
为
的中点,求直线
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/f80f51c31583fea58fde645474d60b8a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f945a69cf7e8213e50622125cde652f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bec03e804f0cea1db5cde2aa185056a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2018/2/25/1889805135708160/1892054452551680/STEM/eb667b660aea4cb2b4e975771c609b95.png?resizew=129)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5dd496ee0c1170ef6dcc48266ee444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8f571a1aac46c6d0cf440c0ec2846bf9.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e7b7c83470489253394bd288d7c920df.png)
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2018-02-28更新
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288次组卷
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2卷引用:甘肃省武威市第一中学2020-2021学年高二上学期期末考试数学(理)试题
9 . 如图,在四棱锥
中,底面
为直角梯形,
,
,
,
与
均为等边三角形,点
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/11/89129cbf-4107-4fec-b655-bca05f3d3220.png?resizew=187)
(1)证明:平面
平面
;
(2)试问在线段
上是否存在点
,使二面角
的余弦值为
,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/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5f79863ffcfa63117ca6741b20a48e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abf38581b1618f9138de026fe3f7db0e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55a675310c8ba418e5a59beb7317e21e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/11/89129cbf-4107-4fec-b655-bca05f3d3220.png?resizew=187)
(1)证明:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90d96357a07048ba79b8c84097d359d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)试问在线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9ea81cfad5da39884e84d257149d7f96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/827ccf0c04aa941ba20d5f4c6068b46b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
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2018-02-16更新
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499次组卷
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3卷引用:【校级联考】甘肃省民乐一中、张掖二中2019届高三上学期第一次调研考试(12月)数学(理)试题
【校级联考】甘肃省民乐一中、张掖二中2019届高三上学期第一次调研考试(12月)数学(理)试题云南省昆明市第一中学2018届高三第五次月考数学(理)试题(已下线)《2018届优生-百日闯关系列》数学专题三 第一关 以立体几何中探索性问题为背景的解答题
名校
解题方法
10 . 已知长方体
,
,
,
为线段
上一点,且
,则
与平面
所成的角的正弦值为( )
![](https://img.xkw.com/dksih/QBM/2018/2/11/1880146226372608/1883622971072512/STEM/02e41507639b4e01bc8451efcaad59b7.png?resizew=269)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7d64fc81c857b124268609a8beb77b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efc6e4b936d7a800e839a30c3839574d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/275d68d50a992cb17d948d3299012a49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2eb89294b31ffdd2680b4361e8994d7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8eb4e4c148b9185e09e454955eaa7312.png)
![](https://img.xkw.com/dksih/QBM/2018/2/11/1880146226372608/1883622971072512/STEM/02e41507639b4e01bc8451efcaad59b7.png?resizew=269)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2018-02-16更新
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16卷引用:甘肃省民勤县第一中学2020-2021学年 第二学期 高二数学(理) 开学考试试卷
甘肃省民勤县第一中学2020-2021学年 第二学期 高二数学(理) 开学考试试卷山东省菏泽市2017-2018学年高二上学期期末考试数学(理)试题河南省林州市第一中学2017-2018学年高二(普通班)上学期期末考试数学(理)试题(已下线)2018年高考数学备考中等生百日捷进提升系列(捷进提升篇)专题08 立体几何湖北省黄石市2019-2020学年高二上学期期末数学试题(已下线)第三章++空间向量与立体几何(能力提升)-2020-2021学年高二数学单元测试定心卷(人教版选修2-1)(已下线)专题8.6 立体几何中的向量方法-2021年高考数学(理)一轮复习-题型全归纳与高效训练突破(已下线)专题8.7 利用空间向量求空间角 (精练)--2021年高考数学(理)一轮复习讲练测(已下线)专题8.7 利用空间向量求空间角(精练)-2021年高考数学(理)一轮复习学与练(已下线)专题5.3 运用空间向量解决立体几何中的角与距离-备战2021年高考数学精选考点专项突破题集(新高考地区)(已下线)黄金卷19-【赢在高考·黄金20卷】备战2021年高考数学全真模拟卷(江苏专用)重庆市两江育才中学2021-2022学年高二上学期第一次阶段性测试数学试题吉林省洮南市第一中学2021-2022学年高二上学期第三次月考数学试卷题安徽省合肥市肥东县综合高中2022-2023学年高三上学期12月月考数学试题河南省济源市英才学校2022-2023学年高二上学期期末数学试题(已下线)期末精确押题之单选题(45题)-2023-2024学年高二数学上学期《考点·题型·难点》期末高效复习(人教A版2019)