1 . 设m、n是两条不同的直线,α,β,γ是三个不同的平面,给出下列四个命题:
①若m⊥α,n∥α,则m⊥n
②若α∥β,β∥γ,m⊥α,则m⊥γ
③若m∥α,n∥α,则m∥n
④若α⊥γ,β⊥γ,则α∥β
其中正确命题的个数是
①若m⊥α,n∥α,则m⊥n
②若α∥β,β∥γ,m⊥α,则m⊥γ
③若m∥α,n∥α,则m∥n
④若α⊥γ,β⊥γ,则α∥β
其中正确命题的个数是
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次
2016-12-04更新
|
354次组卷
|
2卷引用:2015-2016学年湖南省长沙市望城一中高一上学期期末数学试卷
2 . 在四棱锥
中,
底面
,
,
,
,
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/2016/2/23/1572492366143488/1572492372377600/STEM/9cc9093bec834876b64298f596a570db.png)
(1)证明:
;
(2)证明:
平面
;
(3)(限理科生做,文科生不做)求二面角
的余弦值.
![](https://img.xkw.com/dksih/QBM/2016/2/23/1572492366143488/1572492372377600/STEM/541344557ac64516868c69b2bd4208f8.png)
![](https://img.xkw.com/dksih/QBM/2016/2/23/1572492366143488/1572492372377600/STEM/d1e09f13aaaf439d84eacbfdd23c9e5a.png)
![](https://img.xkw.com/dksih/QBM/2016/2/23/1572492366143488/1572492372377600/STEM/e4ebdab4a3b24c35a9a69b42fad1c098.png)
![](https://img.xkw.com/dksih/QBM/2016/2/23/1572492366143488/1572492372377600/STEM/55244509f146423d921ff8fea17fb5f5.png)
![](https://img.xkw.com/dksih/QBM/2016/2/23/1572492366143488/1572492372377600/STEM/b6516d696ba549149abd6d0ba55b85e0.png)
![](https://img.xkw.com/dksih/QBM/2016/2/23/1572492366143488/1572492372377600/STEM/37ccc1e220174c30885cc72b76df9d78.png)
![](https://img.xkw.com/dksih/QBM/2016/2/23/1572492366143488/1572492372377600/STEM/20326226cdf24ab7a58963607562e3e0.png)
![](https://img.xkw.com/dksih/QBM/2016/2/23/1572492366143488/1572492372377600/STEM/138e7b8d55be47d2b6c1bf29c490c35f.png)
![](https://img.xkw.com/dksih/QBM/2016/2/23/1572492366143488/1572492372377600/STEM/ba65bd008c4b423b811afe1f4fc815f2.png)
![](https://img.xkw.com/dksih/QBM/2016/2/23/1572492366143488/1572492372377600/STEM/9cc9093bec834876b64298f596a570db.png)
(1)证明:
![](https://img.xkw.com/dksih/QBM/2016/2/23/1572492366143488/1572492372377600/STEM/929d7edcc4814352a35c681cdd90d6ac.png)
(2)证明:
![](https://img.xkw.com/dksih/QBM/2016/2/23/1572492366143488/1572492372377600/STEM/ea3bf9756fa9466faa8d8f7f66f67cbc.png)
![](https://img.xkw.com/dksih/QBM/2016/2/23/1572492366143488/1572492372377600/STEM/2bc6fd6c750f42bbaf4bf92405a81d8e.png)
(3)(限理科生做,文科生不做)求二面角
![](https://img.xkw.com/dksih/QBM/2016/2/23/1572492366143488/1572492372377600/STEM/9ac5b0fe732b4acabd8306049e055d55.png)
您最近一年使用:0次
3 . 如图所示,正方形
和矩形
所在平面相互垂直,
是
的中点.
(I)求证:
;
(Ⅱ)若直线
与平面
成45o角,求异面直线
与
所成角的余弦值.
![](https://img.xkw.com/dksih/QBM/2011/12/30/1570670039982080/1570670045560832/STEM/269fa22ea2094d3d89c98ceccf9bb4c8.png)
![](https://img.xkw.com/dksih/QBM/2011/12/30/1570670039982080/1570670045560832/STEM/94b1a1e028f342b5afc275133abc16a4.png)
![](https://img.xkw.com/dksih/QBM/2011/12/30/1570670039982080/1570670045560832/STEM/2aa472021b2c4aa594a10bd7be6ca1cf.png)
![](https://img.xkw.com/dksih/QBM/2011/12/30/1570670039982080/1570670045560832/STEM/ccf381b5c300478fb63a417aa0e20096.png)
(I)求证:
![](https://img.xkw.com/dksih/QBM/2011/12/30/1570670039982080/1570670045560832/STEM/a3071d36b15e4c6fb11191bdf6c619ff.png)
(Ⅱ)若直线
![](https://img.xkw.com/dksih/QBM/2011/12/30/1570670039982080/1570670045560832/STEM/323d63cefb284f7a91573cf196c8e1fc.png)
![](https://img.xkw.com/dksih/QBM/2011/12/30/1570670039982080/1570670045560832/STEM/269fa22ea2094d3d89c98ceccf9bb4c8.png)
![](https://img.xkw.com/dksih/QBM/2011/12/30/1570670039982080/1570670045560832/STEM/795494b8f79c4bd3a277f1b662f486ec.png)
![](https://img.xkw.com/dksih/QBM/2011/12/30/1570670039982080/1570670045560832/STEM/3ef6d0ce925b40fbacfa83b3d1a35501.png)
![](https://img.xkw.com/dksih/QBM/2011/12/30/1570670039982080/1570670045560832/STEM/af253d886d054654bcecdc3cebdb693e.png)
您最近一年使用:0次
2016-12-03更新
|
827次组卷
|
6卷引用:2016届湖南省长沙明德中学高三上第三次月考文数学卷
2016届湖南省长沙明德中学高三上第三次月考文数学卷(已下线)2011-2012学年浙江省岱山县大衢中学高二上学期期末考试文科数学(已下线)2012—2013学年四川省攀枝花市七中高二上学期期中理科数学试卷2014-2015学年海南省四校联考高一下学期期末考试数学试卷2015-2016学年四川成都市六校高二上学期期中联考理科数学试卷2015-2016学年四川成都市六校高二上学期期中联考文科数学试卷
4 . 如图,直角梯形
与等腰直角三角形
所在的平面互相垂直,
.
![](https://img.xkw.com/dksih/QBM/2016/11/28/1573184855162880/1573184861110272/STEM/d01b9e66d8774ad8a08a45513c4aec5e.png)
(1)求直线
与平面
所成角的正弦值;
(2)线段
上是否存在点
,使
平面
?若存在,求出
;若不存在,说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad9a8fd82e14814d1f073b185ded6abd.png)
![](https://img.xkw.com/dksih/QBM/2016/11/28/1573184855162880/1573184861110272/STEM/d01b9e66d8774ad8a08a45513c4aec5e.png)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fc56c77464a17a1e97b568762a3e2c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c09afc70f448545336304333d5b5658b.png)
(2)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1642eec556eb252de9c1ab7bb5ca90b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e041ba4d0e619ee4545097ee1522a0f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/128c69eb81dae89c6989d06d20925ad2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c38757c4b09eddb4b0f3c472f4d90626.png)
您最近一年使用:0次
5 . 如图,矩形
垂直于正方形
垂直于平面
.且
.
![](https://img.xkw.com/dksih/QBM/2016/12/9/1579058766381056/1579058766962688/STEM/3ded385ace8249e5b5bd16ed382f3852.png)
(1)证明:面
面
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f84f169e50dc59d4f7a8e1e36f5c847.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7cb7ca930e8c45396717ba3cffb072ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bcef67d18dda75271b9f8cca887b8383.png)
![](https://img.xkw.com/dksih/QBM/2016/12/9/1579058766381056/1579058766962688/STEM/3ded385ace8249e5b5bd16ed382f3852.png)
(1)证明:面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b699318f292cc5edf23fadb6e55d7e35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c4c4034b6339b0961e8937de09df7b6.png)
您最近一年使用:0次
6 . 如图,在底面是菱形的四棱锥P-ABCD中,∠ABC=60o,PA=AB,
.
![](https://img.xkw.com/dksih/QBM/2016/1/8/1572425680715776/1572425686802432/STEM/8635a6563a16430bbb2350d30cb72925.png)
(1)求证:证明:BD⊥平面PAC;
(2)求PC与平面PAB所成角的正切值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69f448b5ea52ae7d0ee6c2c028b8993d.png)
![](https://img.xkw.com/dksih/QBM/2016/1/8/1572425680715776/1572425686802432/STEM/8635a6563a16430bbb2350d30cb72925.png)
(1)求证:证明:BD⊥平面PAC;
(2)求PC与平面PAB所成角的正切值.
您最近一年使用:0次
解题方法
7 . 如图,四棱锥P-ABCD中,底面
为菱形,且
,
.
![](https://img.xkw.com/dksih/QBM/2016/1/5/1572416810254336/1572416815480832/STEM/2d8d521c946043cca8f9351e977f4c78.png)
(Ⅰ)求证:
;
(Ⅱ)若
,求二面角
的余弦值.
![](https://img.xkw.com/dksih/QBM/2016/1/5/1572416810254336/1572416815480832/STEM/199e16944b6648aea3143f6313025159.png)
![](https://img.xkw.com/dksih/QBM/2016/1/5/1572416810254336/1572416815480832/STEM/afeca95e445b4c569621f2ae553b6fdb.png)
![](https://img.xkw.com/dksih/QBM/2016/1/5/1572416810254336/1572416815480832/STEM/dddeb896e31046f4b355ee8b357fcdfc.png)
![](https://img.xkw.com/dksih/QBM/2016/1/5/1572416810254336/1572416815480832/STEM/2d8d521c946043cca8f9351e977f4c78.png)
(Ⅰ)求证:
![](https://img.xkw.com/dksih/QBM/2016/1/5/1572416810254336/1572416815480832/STEM/4c79bb0354194d16a5fd99d4abf4e250.png)
(Ⅱ)若
![](https://img.xkw.com/dksih/QBM/2016/1/5/1572416810254336/1572416815480832/STEM/0e37c858ce1b44aeb619047fd57ea3f4.png)
![](https://img.xkw.com/dksih/QBM/2016/1/5/1572416810254336/1572416815480832/STEM/0142a1ec9fc5441cbba692c694f7a0a9.png)
您最近一年使用:0次
8 . 如图,在三棱柱
中,
侧面
,已知
,
,
,
.
![](https://img.xkw.com/dksih/QBM/2015/6/15/1572123335229440/1572123341316096/STEM/ca009acaf07e4e96b47d8f6072d283e1.png)
(1)求证:
平面
;
(2)当
点为棱
的中点时,求
与平面
所成的角的正弦值.
![](https://img.xkw.com/dksih/QBM/2015/6/15/1572123335229440/1572123341316096/STEM/9e6cec99428b45d68f910a3796b45ac7.png)
![](https://img.xkw.com/dksih/QBM/2015/6/15/1572123335229440/1572123341316096/STEM/d7401aaeecce45948f43f161049df72b.png)
![](https://img.xkw.com/dksih/QBM/2015/6/15/1572123335229440/1572123341316096/STEM/36a70409909846759f53a157686d60cf.png)
![](https://img.xkw.com/dksih/QBM/2015/6/15/1572123335229440/1572123341316096/STEM/3decf25ae9c94dc982bbe3900c9ac504.png)
![](https://img.xkw.com/dksih/QBM/2015/6/15/1572123335229440/1572123341316096/STEM/a57369472f6647aca29e7cff6e6a629b.png)
![](https://img.xkw.com/dksih/QBM/2015/6/15/1572123335229440/1572123341316096/STEM/73e0fd140b094aaa83762a1ad544d090.png)
![](https://img.xkw.com/dksih/QBM/2015/6/15/1572123335229440/1572123341316096/STEM/3b5e59295876408492787dc5e50ad3be.png)
![](https://img.xkw.com/dksih/QBM/2015/6/15/1572123335229440/1572123341316096/STEM/ca009acaf07e4e96b47d8f6072d283e1.png)
(1)求证:
![](https://img.xkw.com/dksih/QBM/2015/6/15/1572123335229440/1572123341316096/STEM/75efc8b6cc2847198892eae24c8484b8.png)
![](https://img.xkw.com/dksih/QBM/2015/6/15/1572123335229440/1572123341316096/STEM/75175b8899dd463180ecaf45c5fd89d5.png)
(2)当
![](https://img.xkw.com/dksih/QBM/2015/6/15/1572123335229440/1572123341316096/STEM/8c762f1fc0464fc1b6753f82948be8fc.png)
![](https://img.xkw.com/dksih/QBM/2015/6/15/1572123335229440/1572123341316096/STEM/bda708c1e6cc481cbba900fee6ebaabc.png)
![](https://img.xkw.com/dksih/QBM/2015/6/15/1572123335229440/1572123341316096/STEM/6d0728c2a96d4ba8ab451ce0bd696117.png)
![](https://img.xkw.com/dksih/QBM/2015/6/15/1572123335229440/1572123341316096/STEM/276da37823ae4e0a8232267507223f7d.png)
您最近一年使用:0次
9 . 如图,在正方体ABCD﹣A1B1C1D1中,E、F分别为棱AB、AD的中点.
![](https://img.xkw.com/dksih/QBM/2016/3/16/1572540956090368/1572540962193408/STEM/e2c037946ba144a481dde9b95aeff64b.png)
(1)求证:EF平行平面CB1D1;
(2)求证:平面CAA1C1⊥平面CB1D1
(3)求直线A1C与平面ABCD所成角的正切值.
![](https://img.xkw.com/dksih/QBM/2016/3/16/1572540956090368/1572540962193408/STEM/e2c037946ba144a481dde9b95aeff64b.png)
(1)求证:EF平行平面CB1D1;
(2)求证:平面CAA1C1⊥平面CB1D1
(3)求直线A1C与平面ABCD所成角的正切值.
您最近一年使用:0次
10 . 如图,
平面
,矩形
的边长
,
为
的中点.
![](https://img.xkw.com/dksih/QBM/2016/6/7/1572693667168256/1572693673435136/STEM/750e918aa7284f5b83cd84c7bbe18c21.png)
(1)证明:
;
(2)如果异面直线
与
所成的角的大小为
,求
的长及点
到平面
的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/551e4cd76a93de89ea2750160fe74923.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/ced06b71073e1bb777f326f06016ce17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9daed11dd71c6f0a2b1bcf37988dac17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/2016/6/7/1572693667168256/1572693673435136/STEM/750e918aa7284f5b83cd84c7bbe18c21.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25fc2b16f468c98640e47ef9a088b053.png)
(2)如果异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecdab625e32e38d1c72c901cece0e147.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/425bb0d1c21eb4448dbbe9a41efa7538.png)
您最近一年使用:0次
2016-12-03更新
|
853次组卷
|
2卷引用:2016届湖南师大附中高三月考四文科数学试卷