名校
解题方法
1 . 直线l与双曲线
的一条渐近线平行,且l过抛物线
的焦点,交C于A,B两点,若
,则E的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ef66f4832adc43902055a7e6d258037.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1bb4dd4670828f75bc573b52cdd02e1d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/55eaf0b36117ecd638c87afb8858b9df.png)
A.2 | B.![]() | C.![]() | D.![]() |
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3卷引用:广东省湛江市第二十一中学2020-2021学年高二下学期期中数学试题
名校
2 . 如图,已知三棱锥
中,
,
,
为
的中点,点
在边
上,且
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/12d4ff18-e4f9-45f9-ba5a-f2fe3cce32a4.png?resizew=149)
(1)证明:
平面
;
(2)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5d90f940f5693b22ddf2e7c761887d8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34af872b64f8dd0e43ff81c4ca6c3f92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f121eabff3c62c1a196d9ca5f6f83f0b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/214618bf0826650ea7a3b2fcc8c1fabe.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/12d4ff18-e4f9-45f9-ba5a-f2fe3cce32a4.png?resizew=149)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/beb3f621855385d885b7b598dec694b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53bdef2e7a7929ad6190302ab44c46c0.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f2edd3e5b926b9bb6e34ef4ada50914.png)
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2021-03-24更新
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6卷引用:广东省湛江市第二十中学2020-2021学年高二下学期第一阶段考试数学试题
广东省湛江市第二十中学2020-2021学年高二下学期第一阶段考试数学试题山东省临沂市罗庄区2020-2021学年高二上学期期末数学试题(已下线)解密07 空间几何中的向量方法(分层训练)-【高频考点解密】2021年新高考数学二轮复习讲义+分层训练江苏省无锡市天一中学2021-2022学年高二上学期第一次教学质量监测数学试题河北省石家庄市第二十二中学2021-2022学年高二下学期阶段一数学试题2023年高考全国乙卷仿真卷数学(理科)试题
名校
3 . 如图,在四棱锥
中,底面ABCD是边长为2的正方形,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/2f5405e5-f811-4917-9e52-200ccc6cbb2f.png?resizew=134)
(1)证明:
平面![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2a9068f1527a6bca5fc24efb61fabb4.png)
(2)若直线BD与平面PBC所成的角为
,求二面角
的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50f8c0d16e1262371d589c445f38d89f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/7/2f5405e5-f811-4917-9e52-200ccc6cbb2f.png?resizew=134)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a1b49f64e0065edad868b25e9fcada3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2a9068f1527a6bca5fc24efb61fabb4.png)
(2)若直线BD与平面PBC所成的角为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b86c22b670a8e9f3896f9e8883fbbb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1ac2a2bb310b6d49725ebbe7581c3b6.png)
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2021-03-22更新
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2卷引用:广东省湛江市第二高级中学2021届高三下学期3月模拟数学试题
4 . 已知椭圆
:
(
)的离心率为
,
的长轴是圆
:
的直径.
(1)求椭圆的标准方程;
(2)过椭圆
的左焦点
作两条相互垂直的直线
,
,其中
交椭圆
于
,
两点,
交圆
于
,
两点,求四边形
面积的最小值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](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)
![](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/1d61985901c2bc698d72ac88f4e1eb65.png)
(1)求椭圆的标准方程;
(2)过椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.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/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.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/99393efa04579f3db5cf4f7e319f0440.png)
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5 . 已知双曲线C:
=1(a,b>0)的左、右焦点分别为F1(-c,0),F2(c,0),其中c>0, M(c,3)在C上,且C的离心率为2.
(1)求C的标准方程;
(2)若O为坐标原点,∠F1MF2的角平分线l与曲线D:
=1的交点为P,Q,试判断OP与OQ是否垂直,并说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f2ea8fcb101c2ecba2b2c862eb66b7f.png)
(1)求C的标准方程;
(2)若O为坐标原点,∠F1MF2的角平分线l与曲线D:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35b6c59e4ff8a402e25e2190028ed951.png)
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6卷引用:广东省湛江市2021届高三一模数学试题
广东省湛江市2021届高三一模数学试题(已下线)专题1.9 圆锥曲线-双曲线-2021年高考数学解答题挑战满分专项训练(新高考地区专用)(已下线)预测卷03-2021年高考数学金榜预测卷(山东、海南专用)广东省北大附中深圳南山分校2021届高三下学期3月一模数学试题重庆市酉阳土家族苗族自治县第三中学校2021届高三数学考前猜题卷试题广东省高州市第一中学2021届高三下学期3月月考数学试题
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6 . 已知椭圆
:
的离心率为
,且过点
.
(1)求椭圆
的方程;
(2)若直线
(
且
)交椭圆
于
,
两点,记直线
,
的斜率分别为
,
,探究:
是否为定值,若是,求出该值;若不是,请说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dd54b9df3402ad91e2d34c40efe0c7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/860884c0017c8bceb5b0edff796c144f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab66027730d4dd085909852490fee993.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/b13b81689be774a5b99c82bd7bd961dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0baedc4d7e690ab3f7d80d30ba0a9efe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c6be30b09cb0f47507c6f58e28dde96.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/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.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/b4757181824e15e0f21e5bdd55448783.png)
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8卷引用:广东省湛江市第二十一中学2020-2021学年高二下学期3月月考数学试题
广东省湛江市第二十一中学2020-2021学年高二下学期3月月考数学试题安徽省皖智教育A10联盟2021届高三下学期开年考文科数学试题安徽省十校联盟2021届高三下学期开学考试理科数学试题(已下线)1号卷·A10联盟2021届高三开年考理科数学(已下线)1号卷·A10联盟2021届高三开年考文科数学(已下线)专题1.11 圆锥曲线-定点、定值、定直线问题-2021年高考数学解答题挑战满分专项训练(新高考地区专用)山东省淄博市淄博实验中学2021-2022学年高三上学期9月月考数学试题1号卷·A10联盟2022届全国高考第一轮总复习试卷数学(文科)试题(二十四)
名校
解题方法
7 . 如图,在直三棱柱
中,
,
,
分别为侧棱
,
的中点.
![](https://img.xkw.com/dksih/QBM/2021/2/2/2649456150011904/2651679379013632/STEM/967c2f61abe948b0997626223e235fdc.png?resizew=113)
(1)证明:
平面
;
(2)求
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/615fc8790237a1b09af51d6bcad6b595.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/af30873743bc357559cc6bd8b5241c26.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0a851907ada2ac2c3c4880a6736d28a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://img.xkw.com/dksih/QBM/2021/2/2/2649456150011904/2651679379013632/STEM/967c2f61abe948b0997626223e235fdc.png?resizew=113)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8ccd4181f956f6e0140bf0ab8f0716.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d365ce9f4bacc4d4bb15dbdb5306a5.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7f6f93171329d508d491143b9d71f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45d365ce9f4bacc4d4bb15dbdb5306a5.png)
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5卷引用:广东省湛江市2020-2021学年高二上学期期末调研数学试题
8 . 如图,平面
平面
,四边形
为正方形,点B在正方形
的外部,且
.
![](https://img.xkw.com/dksih/QBM/2021/1/29/2646417174388736/2649902272315392/STEM/82c48ba1-5fc7-449d-952a-b9d0d622acf1.png)
(1)证明:
.
(2)求平面
与平面
所成锐二面角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9905abb76186af63eb7e9565d796bce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b1f13007c6d134c50004c62dc240707.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b1f13007c6d134c50004c62dc240707.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b9d54cbbf601f4583659771eb534997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fc961d1d9d745f7e69260a86553f956.png)
![](https://img.xkw.com/dksih/QBM/2021/1/29/2646417174388736/2649902272315392/STEM/82c48ba1-5fc7-449d-952a-b9d0d622acf1.png)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e521605c1066839c8cf71f0941b36d6d.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24dc8826770249f3996b8a188c03da92.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9142a8490de14a87eda628ffa7e28982.png)
您最近一年使用:0次
9 . 已知椭圆
的左、右顶点分别为
,点P为
上一点,且P不在坐标轴上,直线
与直线
交于点C,直线
与直线
交于点D.设直线
的斜率为k,则满足
的k的值可能为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52673f864b4f9b880d9864e78030dfdb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb398137779190b35492d9f06d5fbc3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cb9ad1e34877b0db02d0219332b0f7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92002afa0b414eae387a91207c629398.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92002afa0b414eae387a91207c629398.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20a541b81584a032f571159ea152c85a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/234d78c989722f42c86c5cac4751d5a5.png)
A.1 | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
10 . P为椭圆
上一动点,
,
分别为左、右焦点,延长
至点Q,使得
,则动点Q的轨迹方程为( )
![](https://img.xkw.com/dksih/QBM/2021/1/29/2646417174388736/2649902272045056/STEM/278d0021-e46a-4ea8-8792-c232475cf048.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df8e45611cd9bff75a0ee702ebc18110.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/da01a3abe1c9dc4e6283afa0dc1a0d39.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c6a0064f3eccab14e3687ab1693710a.png)
![](https://img.xkw.com/dksih/QBM/2021/1/29/2646417174388736/2649902272045056/STEM/278d0021-e46a-4ea8-8792-c232475cf048.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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7卷引用:广东省湛江市2020-2021学年高二上学期期末调研数学试题