名校
1 . 如图在四棱锥
中,底面
是矩形,
,
,
,
为
的中点,面
面
.
![](https://img.xkw.com/dksih/QBM/2021/9/13/2807452857565184/2810623234637824/STEM/6262a71a-5c9a-4243-a658-ef146aaf2e38.png?resizew=227)
(1)证明:
面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e6c2dad46a9052a4185a4f7b4ae8a2e.png)
(2)求二面角
的余弦值.
![](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/79012f04b8cc315d382edf4f953c06f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/526908dfb46cf151b8ab1492a9d52047.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ed66431681da1db8f7cb0f40cd19201.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/342d452a7b850cd3a15b23619ad39bd7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/2021/9/13/2807452857565184/2810623234637824/STEM/6262a71a-5c9a-4243-a658-ef146aaf2e38.png?resizew=227)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/662698361c6b3ddaf0c28a3c87be53e0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e6c2dad46a9052a4185a4f7b4ae8a2e.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/caa431d661bf9f419e8ab713dd4a3c80.png)
您最近一年使用:0次
2021-09-18更新
|
837次组卷
|
6卷引用:甘肃省天水市第一中学2021-2022学年高三上学期第二阶段考试数学(理)试题
名校
2 . 如图,在四棱锥
中,底面
为正方形,△
是正三角形,侧面
底面
,
是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/3729fc57-ed80-4e01-8b3a-79ca5715178a.png?resizew=165)
(1)求证:
平面
;
(2)求二面角
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/852aabd89edffc1b94344ff3f1f31ccd.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/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/23/3729fc57-ed80-4e01-8b3a-79ca5715178a.png?resizew=165)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d0edb1508fc95765f3bb316bcb5252d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b33b7213d99a817bff19bcf740a0697c.png)
您最近一年使用:0次
2021-09-23更新
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1251次组卷
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4卷引用:甘肃省天水市第一中学2021-2022学年高三上学期第三次考试数学(理科)试题
甘肃省天水市第一中学2021-2022学年高三上学期第三次考试数学(理科)试题吉林省长春市2022届高三上学期质量监测(一)数学(理)试题湖北省武汉市第十四中学2021-2022学年高二上学期10月月考数学试题(已下线)专题10 立体几何-备战2022年高考数学(文)母题题源解密(全国乙卷)
名校
3 . 已知椭圆
(
)的焦点是F1,F2,且| F1F2|=2,离心率为
.
(1)求椭圆的方程;
(2)过椭圆右焦点F2的直线
交椭圆于
,
(
)两点,点Q是直线l上异于F2的一点,且满足
.求证:点Q的横坐标是定值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7aea48c44781a844b5c19191f70f61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
(1)求椭圆的方程;
(2)过椭圆右焦点F2的直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2210f152080d9a68a97c805f5c1cde96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e9a796109c08a2e29a05ae8b52a5b41.png)
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2021-08-31更新
|
584次组卷
|
2卷引用:甘肃省张掖市某重点校2022-2023学年高三上学期第四次检测数学(理)试题
名校
4 . 如图,在三棱锥
中,
平面ABC,
,
,点E,F分别是AB,AD的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/18/2e6cb80f-9086-4252-8a3a-cb421a0c9610.png?resizew=276)
(1)求证:
平面BCD;
(2)设
,求直线AD与平面CEF所成角的正弦值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f30533da2e1d2a958dc906c37eba9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ff7bd82b90112fa0f8383b069564b6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed10df4140819d5451773a45de66201b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/18/2e6cb80f-9086-4252-8a3a-cb421a0c9610.png?resizew=276)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56fdf217165748fafe938b64fa08179.png)
(2)设
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/927729940a1598d48e1b6ebc1c2f78ec.png)
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2021-08-17更新
|
2291次组卷
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12卷引用:甘肃省兰州市第一中学2021-2022学年高三上学期第一次月考(10月)数学(理)试题
甘肃省兰州市第一中学2021-2022学年高三上学期第一次月考(10月)数学(理)试题陕西省渭南市富平县2021届高三下学期二模理科数学试题湖北省黄石市大冶市第一中学2021-2022学年高二上学期10月月考数学试题陕西省部分名校2021-2022学年高三上学期10月月考理科数学试题(已下线)专题19 空间向量与立体几何(解答题)-备战2022年高考数学(理)母题题源解密(全国甲卷)陕西省汉中市校际联考2020-2021学年高二下学期期末理科数学试题广东省汕头市潮阳区棉城中学2021-2022学年高二上学期期中数学试题第一章 空间向量与立体几何单元测试(巅峰版)辽宁省大连部分重点高中2022-2023学年高二上学期10月月考数学试卷陕西省榆林市神木中学2021届高三下学期适应性考试理科数学试题江苏省南通市通州区石港中学2022-2023学年高二下学期第三次阶段检测数学试题安徽省合肥一六八中学2021-2022学年高二上学期第一次月考数学试题
名校
解题方法
5 . 十七世纪法国数学家费马在《平面与立体轨迹引论》中证明,方程
表示椭圆,费马所依据的是椭圆的重要性质:若从椭圆上任意一点P(异于A,B两点)向长轴AB引垂线,垂足为Q,记
.下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a0dfa5b5e4ece0e461b804dab9d5bbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/592413be55e128d0fa37edede557cde4.png)
A.M的值与Р点在椭圆上的位置有关 | B.M的值与Р点在椭圆上的位置无关 |
C.M的值越大,椭圆的离心率越大 | D.M的值越大,椭圆的离心率越小 |
您最近一年使用:0次
2021-10-18更新
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1632次组卷
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9卷引用:甘肃省张掖市某重点校2023-2024学年高二上学期9月月考数学试题
甘肃省张掖市某重点校2023-2024学年高二上学期9月月考数学试题辽宁省沈阳市沈阳市第一二〇中学2021-2022学年高二上学期第二次质量检测数学试题(已下线)数学与数学家(已下线)第十一章 圆锥曲线专练1—椭圆小题1-2022届高三数学一轮复习(已下线)考点19 圆锥曲线-2022年高考数学一轮复习小题多维练(新高考版)(已下线)专题3.4 椭圆的简单几何性质-重难点题型检测-2021-2022学年高二数学举一反三系列(人教A版2019选择性必修第一册)(已下线)专题11 费马辽宁省大连市第八中学2021-2022学年高二上学期期中考试数学试题江西省南昌市豫章中学2024届高三下学期5月模拟(三模)数学试题(B卷)
名校
解题方法
6 . 如图,在四棱锥
中,底面
是菱形,
平面
,
,
,
为
的中点,
为
的中点.
![](https://img.xkw.com/dksih/QBM/2021/9/5/2801459760177152/2802118573514752/STEM/60f060483da04840b3200d1b002325f5.png?resizew=211)
(1)求证:平面
平面
;
(2)求平面
与平面
的夹角的余弦值.
![](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/ccd4fd4b7a4d6b8ca0c5827c055a9ce7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f83a04565a8ebaa111894b724b0ba266.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e075468e7fb0bf30229aec01a7205977.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/2021/9/5/2801459760177152/2802118573514752/STEM/60f060483da04840b3200d1b002325f5.png?resizew=211)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6501f1c913a4ef64957a2f01ab5baa15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03428a8f91a5674cb8f54766c165f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
2021-09-06更新
|
676次组卷
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3卷引用:甘肃省兰州市第一中学2021-2022学年高三上学期11月防疫居家阶段检测数学(理科)试题
名校
解题方法
7 . 已知椭圆
的中心在坐标原点,焦点在
轴上,该椭圆经过点
,离心率为
.
(1)求椭圆
的标准方程;
(2)若直线
与椭圆
相交
两点(
不是左右顶点),且以
为直径的圆过椭圆
的右顶点,求证:直线
过定点,并求出该定点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/480f004c98a0df86a35a48bc973f0472.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fc5bd66dd6d5e09ff0893a938aed56e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
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2021-07-21更新
|
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7卷引用:甘肃省天水市第一中学2022-2023学年高二上学期第二学段检测考试数学试题
名校
8 . 如下图,平面ABCD⊥平面ABEF,四边形ABCD是正方形,四边形ABEF是矩形,AF=
AD=a,G是EF的中点.
![](https://img.xkw.com/dksih/QBM/2021/1/3/2628338673606656/2632353488568320/STEM/85ffa9c9-12c7-420f-96ab-658e26c1fe7a.png?resizew=252)
(1)求证:AG⊥平面BGC;
(2)求GB与平面AGC所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://img.xkw.com/dksih/QBM/2021/1/3/2628338673606656/2632353488568320/STEM/85ffa9c9-12c7-420f-96ab-658e26c1fe7a.png?resizew=252)
(1)求证:AG⊥平面BGC;
(2)求GB与平面AGC所成角的正弦值.
您最近一年使用:0次
2021-01-09更新
|
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2卷引用:甘肃省天水市秦州区第一中学2020-2021学年高一上学期第五次月考数学试题
名校
解题方法
9 . 如图所示,直角梯形
中,
,
,
,四边形
为矩形,
,平面
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/13/6813c594-0d31-4685-8454-b34e04857f71.png?resizew=162)
(1)求证:
平面
;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9060f03b9ee41d70d135b1e1a8902ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fa9254b9703c6d3935ef8b3b8e36b85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd1e2c273d6413383af978b52b1cd64f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/93bc4c9dd737193f7acce692b23500d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15ea464a0929a33bedd2ee95cdb66ba8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/13/6813c594-0d31-4685-8454-b34e04857f71.png?resizew=162)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15f3e3f310f6ec3f3a26498e7ee17a00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/646084b7f3902efa4c462ed67599265a.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/316d5655efb42b70f06be0178c7fddf2.png)
您最近一年使用:0次
2021-06-07更新
|
736次组卷
|
5卷引用:甘肃省张掖市某重点校2022-2023学年高三上学期第六次检测数学(理)试题
名校
解题方法
10 . 已知圆
与抛物线
在
轴下方的交点为
,与抛物线
的准线在
轴上方的交点为
,且点
,
关于直线
对称.
(1)求抛物线
的方程;
(2)若点
,
是抛物线
上与点
不重合的两个动点,且
,求证:直线
过定点,并求出定点坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81efca4df0832d45e8090d2901b8b424.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ab7408ffcefcb8e5e1ad4a9c58f1b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.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/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
(1)求抛物线
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(2)若点
![](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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f59747cee312ee5140643428cae79efa.png)
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2021-05-28更新
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4卷引用:甘肃省天水市第一中学2024届高三上学期第三次月考数学试题
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