名校
1 . 在平面直角坐标系中,已知椭圆
和双曲线
有相同的焦点
,
,点
是
与
的一个交点,满足
.设椭圆的离心率为
,双曲线的离心率为
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/896f416b6e642be6945d1017f4ec6050.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d33558881906c228c262ff8024dcfc4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a33a99190a8fd29c36d5a002e3197cc5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51663ae7f8163e23c959ead7b2e0a127.png)
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
名校
2 . 在等腰梯形ABCD中(如图),
,
,
,
,
,现沿DE将等腰梯形折成直二面角.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/c1f7a906-d758-4145-8341-dcef7ec92f7b.jpg?resizew=165)
(1)证明:
平面ACE;
(2)求平面ADE与平面ABC所成二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32c38dfd14dde969702dff97ef2270f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55c24a968c73e960698a572ab01e3698.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cd7a42341edbc0b01ab0769c4c02c3e3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/15/c1f7a906-d758-4145-8341-dcef7ec92f7b.jpg?resizew=165)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e2ffc6952e988d04f22f0fb2f7f0ab7b.png)
(2)求平面ADE与平面ABC所成二面角的余弦值.
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2022-03-24更新
|
259次组卷
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2卷引用:安徽省芜湖市南陵中学2021-2022学年高二上学期9月月考数学试题
名校
3 . 如图,直三棱柱
中,
分别是
的两个三等分点,
,
.
![](https://img.xkw.com/dksih/QBM/2022/3/22/2941800505016320/2942968557355008/STEM/7c91e35b13ef43e9af2e4c75b295e780.png?resizew=132)
(1)证明:
平面
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0e66e7d136ac36cff4b59b13834a6bb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f51ec00e94ab7c0bc8cc9648ae03df3.png)
![](https://img.xkw.com/dksih/QBM/2022/3/22/2941800505016320/2942968557355008/STEM/7c91e35b13ef43e9af2e4c75b295e780.png?resizew=132)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50d8e9f7f70a5d8313a542f4aa84a1d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/74bca84ad86c648d3bb20c8909c8da3f.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e516121599c9fcc528121c00afcf52fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a98287a302228ece1fa53c5c66c590f.png)
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4 . 如图,在四棱锥
中,底面ABCD为矩形且
,侧面
底面ABCD,且侧面PAD是正三角形,E、F分别是AD、PB的中点.
![](https://img.xkw.com/dksih/QBM/2021/12/20/2876698147528704/2942950486368256/STEM/4e0782e2-a2b5-483d-a11c-0b9ddbcbfa63.png?resizew=165)
(1)证明:
平面PCE;
(2)求直线CF与平面PCE所成角的正弦值;
(3)求点F到平面PCE的距离.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1b929269c53a44907dba8ee298a0a522.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93edc7bb513f40a89173121c8570cd65.png)
![](https://img.xkw.com/dksih/QBM/2021/12/20/2876698147528704/2942950486368256/STEM/4e0782e2-a2b5-483d-a11c-0b9ddbcbfa63.png?resizew=165)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c9c89e28bb3b5ce434e8ebea6363339.png)
(2)求直线CF与平面PCE所成角的正弦值;
(3)求点F到平面PCE的距离.
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5 . 在棱长为2的正四面体ABCD中,E,F分别为AB,CD的中点,则
( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c7994df0c0e9e7a1ec510b6d3c8f5d0.png)
A.![]() | B.1 | C.![]() | D.2 |
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解题方法
6 . 如图,正三棱柱ABC−A1B1C1的所有棱长均为2,D为棱BB1(不包括端点)上一动点,E是AB的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/5347bbc6-7fb2-410b-9411-e6c723e0d3ab.png?resizew=172)
(1)若AD⊥A1C,求BD的长;
(2)当D在棱BB1(不包括端点)上运动时,求平面ADC1与平面ABC的夹角的余弦值的取值范围.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/14/5347bbc6-7fb2-410b-9411-e6c723e0d3ab.png?resizew=172)
(1)若AD⊥A1C,求BD的长;
(2)当D在棱BB1(不包括端点)上运动时,求平面ADC1与平面ABC的夹角的余弦值的取值范围.
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2022-03-23更新
|
1142次组卷
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6卷引用:安徽省宿州市泗县第一中学2021届高三下学期最后一卷理科数学试题
名校
7 . 关于空间向量,下列说法正确的是( )
A.直线![]() ![]() ![]() ![]() ![]() |
B.直线![]() ![]() ![]() ![]() ![]() |
C.若对空间内任意一点![]() ![]() |
D.平面![]() ![]() ![]() ![]() ![]() |
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2022-03-20更新
|
553次组卷
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5卷引用:安徽省合肥一六八中学2021-2022学年高二上学期第二次月考数学试题
安徽省合肥一六八中学2021-2022学年高二上学期第二次月考数学试题浙江省精诚联盟2021-2022学年高二下学期3月联考数学试题江苏省淮安市淮阴中学2021-2022学年高二下学期期中数学试题河北省石家庄市二十一中2022-2023学年高二上学期第一次月考数学试题(已下线)1.2.2 空间中的平面与空间向量(分层训练)-2023-2024学年高二数学同步精品课堂(人教B版2019选择性必修第一册)
名校
解题方法
8 . 已知椭圆
的离心率为
,且经过点
,
,过点
作直线
与椭圆交于点
,
(点
,
异于点
,
),连接直线
,
交于点
.
(1)求椭圆的方程;
(2)当点
位于第二象限时,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd99c5000629d7f49499d666e68f40d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852b303689c31189cd47bb4a3220f9fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eefa9389cabcec54a759824ed524df58.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84d454c82d9e52747563d47b68099249.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
(1)求椭圆的方程;
(2)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f37d4b3fc662ef959da246fe5a17dd0a.png)
您最近一年使用:0次
2022-03-17更新
|
910次组卷
|
4卷引用:安徽省皖南八校2021-2022学年高三上学期12月第二次联考理科数学试题
解题方法
9 . 在直棱柱
中,
,
,且
,
,
,
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/3a132f7a-eff0-48f7-a4cf-3b9084ad2097.png?resizew=172)
(1)求证:
;
(2)求直线
与平面
所成角正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1134c8e3440abb6cd385af2c169037fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27db558e8db4c957654c8e5cecd2d2dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e65a3e478bb87d094e3a0af30dd10ae8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cf90bac174f02c4552e56df4d910bd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ab136e272e58c03fa101a0b5ed084d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/31/3a132f7a-eff0-48f7-a4cf-3b9084ad2097.png?resizew=172)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0a0d2a2415ec1e1374ac46bc232f450.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15dc61d5de97b5a40be925b278ae494c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/500df0e782bb081e608f4bc1d576afcf.png)
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解题方法
10 . 已知抛物线
的焦点为
,若直线
过点
,且与抛物线
交于
,
两点,过点
作直线
的垂线,垂足为点
,点
在
轴上,线段
,
互相垂直平分,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc7ad3432ac96b0a38beaa7f2edc3499.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eefa44964db83759aff6fc8dd7ef8f28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d103d683d2fd06b6fa9ec5523c2ea0c9.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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