解题方法
1 . 已知椭圆
的左顶点为
,上顶点为
,离心率为
,
.
(1)求椭圆的方程;
(2)设点
在椭圆上,且异于椭圆的上、下顶点,点
在圆
上,直线
,
的斜率分别为
,
,且
,求证:
(i)
;
(ii)直线
过定点,并求出此定点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.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/1174142f3bba761585b6bc2653009b36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae5a64bcb77f5f64e4af6930c249a270.png)
(1)求椭圆的方程;
(2)设点
![](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/ef74c4299221a967507c6a179337581a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e69d2b798744645af88a4fa411344a83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7785afeeaf274892253d04b4f693b367.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6defc43285a40f7ccb74c1cc04265eba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/423b7ae39db552e60ee8b1d27312306f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c80b04ce48c9ace43276552c77108126.png)
(i)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d85c6b63bef0f632fee2e7e438a4b5cc.png)
(ii)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411461db15ee8086332c531e086c40c7.png)
您最近一年使用:0次
解题方法
2 . 如图,
且
,
,
且
,
且
,
平面
,
,M为棱
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/13/ead5b860-4040-40db-af0f-f38a12e0c74b.png?resizew=149)
(1)求证:
平面
;
(2)求直线
与平面
所成角的正弦值;
(3)求平面
与平面
夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10df84d553a8826a7ce9bff4bf0d95b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64f1161e0345b3646c71365430dccbb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cdb2dd10731b99c0f4f89ee957f8a239.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1989dc6aef61c294690d2105c72e894a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99188a6a00aabcd6936044139c771b1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/155de273b3d3857761ef315adb514b4d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7cb1376856b53c9d7a721dd92564f84.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3cf187bc2ede965870b90757b495f53.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6df76b0fddc037620e368d44cc30a791.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c63e36329f5e0979f5ee776ac5d06327.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/13/ead5b860-4040-40db-af0f-f38a12e0c74b.png?resizew=149)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8ccd4181f956f6e0140bf0ab8f0716.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0701f67727b0fc8100cfb5e20ec27d9b.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85c4bdfb0db1e31e8459df1d15f9ab55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0701f67727b0fc8100cfb5e20ec27d9b.png)
(3)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43819ab7b268a6293a9251935b594690.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0701f67727b0fc8100cfb5e20ec27d9b.png)
您最近一年使用:0次
3 . 如图,在棱长为2的正方体
中,
为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/13/34441aed-3e4d-49d6-8091-33ef0c441207.png?resizew=167)
(1)求证:
平面
;
(2)求直线
与平面
所成角的正弦值;
(3)求平面
和平面
的夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/13/34441aed-3e4d-49d6-8091-33ef0c441207.png?resizew=167)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/debdc6632a4877e5131d3da25cda8b89.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea55a7e39361987096953d3a3ee1eaa4.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83c09eec4e14a861af83d7828797d176.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea55a7e39361987096953d3a3ee1eaa4.png)
(3)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2331bccb6ebf5b9fd639df994f575a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea55a7e39361987096953d3a3ee1eaa4.png)
您最近一年使用:0次
4 . 已知椭圆
的离心率为
,右焦点为
.
(1)求椭圆的方程;
(2)设直线
与椭圆交于A,B两点,求
的面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d5989c84e320b504511f23eeb6e7357.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/092fd1b1d33979818300cd2e3699bff7.png)
(1)求椭圆的方程;
(2)设直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e747e5274776e352f3d9ff5c2efc4b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2eaceb8d6c6927e14d9ac7a557a2b11d.png)
您最近一年使用:0次
名校
解题方法
5 . 如图,在三棱台ABC﹣A1B1C1中,∠BAC=90°,AB=AC=4,A1A=A1B1=2,侧棱A1A⊥平面ABC,点D是棱CC1的中点.
(2)求点B1到平面ABD的距离;
(3)求平面BCD与平面ABD的夹角的余弦值.
(2)求点B1到平面ABD的距离;
(3)求平面BCD与平面ABD的夹角的余弦值.
您最近一年使用:0次
2023-10-09更新
|
763次组卷
|
7卷引用:天津市宁河区芦台第一中学2022-2023学年高二上学期第一次学习诊断数学试题
名校
解题方法
6 . 如图,在四棱锥
中,底面
是边长为4的正方形,
是等边三角形,
平面
,E,F,G,O分别是
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/10/68ada189-6f55-4a60-9147-b0f446c7332d.png?resizew=197)
(1)求证:
平面
;
(2)求平面
与平面
的夹角的大小;
(3)线段
上是否存在点M,使得直线
与平面
所成角为
,若存在,求线段
的长;若不存在,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/55a675310c8ba418e5a59beb7317e21e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97f30533da2e1d2a958dc906c37eba9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/852aabd89edffc1b94344ff3f1f31ccd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5371d1995b094f4fc9b73e647efbd5c6.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/10/68ada189-6f55-4a60-9147-b0f446c7332d.png?resizew=197)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3e126c16032892966489053f44b9048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe8a84ca3a13f82aff1a022edc66065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
(3)线段
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e9e953a4a5f98c96bbe67cbaadf76d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ffe8a84ca3a13f82aff1a022edc66065.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac1a63ab608517bb10aa036783dfb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/892909e49156f7dcc0650fcd65243877.png)
您最近一年使用:0次
名校
7 . 已知点F为椭圆
的右焦点,A为椭圆的左顶点,椭圆的离心率为
,连接椭圆的四个顶点得到的菱形的面积为4.
(1)求椭圆的方程;
(2)设过点A作斜率为k的直线交椭圆于另一点B,
①求
的取值范围;
②若
,求k的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48da128547c4cf9745e8e4b99988a3db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
(1)求椭圆的方程;
(2)设过点A作斜率为k的直线交椭圆于另一点B,
①求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd82dde0343bdcd7822f076bf5859e39.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e99f2bf6e439333cba7064c43e51f7d.png)
您最近一年使用:0次
名校
解题方法
8 . 在平面直角坐标系
中,已知椭圆
(
过点
,且离心率
.
(1)求椭圆C的方程;
(2)直线l的斜率为
,直线l与椭圆C交于A、B两点,求
的面积的最大值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7d72a07a4e5acfc140a3cea1f26b951.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a0c4c098615c6bc7e6dcf72e5b5201a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4754fbe523ca63eba3810a3f88f37df3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5de85df85401e7e8da683ea4a784963c.png)
(1)求椭圆C的方程;
(2)直线l的斜率为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2205cffebf8c4d5f81d15ed7b85c8936.png)
您最近一年使用:0次
2024-02-04更新
|
904次组卷
|
19卷引用:天津市宁河区芦台第一中学2022-2023学年高二上学期期中考前统练数学试题
天津市宁河区芦台第一中学2022-2023学年高二上学期期中考前统练数学试题天津市宁河区芦台第一中学2022-2023学年高二上学期11月月考数学试题安徽省淮北市相山区淮北师范大学附属实验中学2019-2020学年高二上学期期末数学(文)试题宁夏石嘴山市第三中学2019-2020学年高二上学期第二次月考数学(文)试题安徽省淮北市第一中学2018-2019学年高二下学期期中数学(文)试题山西大学附中2019-2020学年高二(12月份)第四次诊断数学(文科)试题天津市津南区咸水沽第一中学2020-2021学年高二上学期期中数学试题(已下线)重难点5 解析几何-2021年高考数学【热点·重点·难点】专练(山东专用)(已下线)专题9.3 椭圆(精练)-2021年新高考数学一轮复习学与练广西田东县田东中学2020-2021学年高二上学期期末测试数学(理)试题(已下线)江苏省南通市如皋市2021-2022学年高二上学期期中数学试题广西玉林市博白县第四中学(博白县中学书香校区)2022-2023学年高二上学期12月段考数学试题海南省海口市海南中学2023-2024学年高二上学期期末数学模拟试题河南省洛阳市偃师高级中学2022-2023学年高一下学期4月月考数学试题重庆市渝高中学校2023-2024学年高二下学期阶段测试数学试题重庆市铜梁一中等重点中学2023-2024学年高二下学期3月月考数学试题湖北省武汉市第七中学2023-2024学年高二下学期3月月考数学试卷湖北省天门市天门中学2023-2024学年高二下学期3月月考数学试题(已下线)信息必刷卷01(北京专用)
名校
解题方法
9 . 如图,在三棱锥
中,平面
平面
,
,
为
的中点,
是边长为1的等边三角形,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/11/6c4966d2-fbe2-48b3-ae39-61bc45cbbe52.png?resizew=219)
(1)证明:
;
(2)求直线
和平面
所成角的正弦值;
(3)在棱
上是否存在点
,使二面角
的大小为
?若存在,并求出
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/891579e7c231584a8e16b8eeff79888e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcf6dc837ae85207789b94d109c5c2eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca67a5b8f69507c8b80379e86f90a8ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e735a28578ba191da6d4f3b0f8e8729.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4807ca16360c0cca436e59d4be98f626.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0482d12694d419694ecab90485ab70f8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/11/6c4966d2-fbe2-48b3-ae39-61bc45cbbe52.png?resizew=219)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/21be01a95cdd3149512bf95d6084fdd6.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d78abbad68bbbf12af10cd40ef4c353.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
(3)在棱
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/324d453870b345da0c41977290192f94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79a97bb4dcfab4ec7539bc783d563c49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a50b31b40c0d28bed4572ce27b30a19.png)
您最近一年使用:0次
2022-11-08更新
|
1487次组卷
|
3卷引用:天津市宁河区芦台第一中学2022-2023学年高二上学期期中考前统练数学试题
名校
10 . 如图,在三棱锥
中,
,
,
,O为AC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/23/f9289f3f-0bc6-42a5-b0c4-60be92336c54.png?resizew=193)
(1)证明:
;
(2)若M为棱BC的中点,求:
(i)异面直线AM与PC所成的角余弦值;
(ii)求平面AMP与平面ACP的夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc372b6fd2c0415bf2a3a3b04f547b49.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/086b195fa3c01695809ba94ddf0261aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e7e69fbcd7cc2adb8478cb4b9f60b79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f7b7b14e508ef3640e75b3733592c3f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/23/f9289f3f-0bc6-42a5-b0c4-60be92336c54.png?resizew=193)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d6a0ab03ea305159dd235cc46cf79a2.png)
(2)若M为棱BC的中点,求:
(i)异面直线AM与PC所成的角余弦值;
(ii)求平面AMP与平面ACP的夹角的余弦值.
您最近一年使用:0次
2022-10-19更新
|
367次组卷
|
2卷引用:天津市宁河区芦台第一中学2022-2023学年高二上学期第一次学习诊断数学试题