解题方法
1 . 如图,矩形
所在的平面垂直于平面
,
为
的中点,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/64077d4a-1171-413b-9a38-912f0f845983.png?resizew=132)
(1)求异面直线
与
所成角的余弦值;
(2)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bee4a6b8ef3e79b4482388c3391d8b18.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b0cef0afd8048632c095429dfa0082.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c7c8630dc73828eec20b778072909fa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/077c956ac0eb05cf120e14f17413dfa2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d0d5a2cd05e4476fc72271e8fdb59a9a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/22/64077d4a-1171-413b-9a38-912f0f845983.png?resizew=132)
(1)求异面直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51e231505648333857565accb0c3c898.png)
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2 . 在平面直角坐标系
中,椭圆E:
(
)的长轴长为4,左准线l的方程为
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/e575d02c-657e-469a-9eb1-3fe51654a2e0.png?resizew=211)
(1)求椭圆的标准方程;
(2)直线
过椭圆E的左焦点
,且与椭圆E交于A,B两点.
①若
,求直线
的方程;
②过A作左准线l的垂线,垂足为
,点
,求证:
,B,G三点共线.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.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/a089c207e39a24d0d82aa853ac2bbb8c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/e575d02c-657e-469a-9eb1-3fe51654a2e0.png?resizew=211)
(1)求椭圆的标准方程;
(2)直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51d79cbc472097d8905c1f11cfc357b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
②过A作左准线l的垂线,垂足为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36d59d82cb961f72864994b5e8454107.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
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2020-02-18更新
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2卷引用:2020届江苏省镇江市高三上学期第一次调研考试(期末)数学试题
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3 . 顶点在原点且以双曲线
的右焦点为焦点的抛物线方程是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6cf8bc908b192921416bb2d958ed539.png)
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2020-02-18更新
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3卷引用:2020届江苏省镇江市高三上学期第一次调研考试(期末)数学试题
4 . 在平面直角坐标系xOy中,顶点在原点且以双曲线
的右准线为准线的抛物线方程是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c477e5ade921ffa8377c4719319380ff.png)
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5 . 已知
,则“
”是“函数
为偶函数”的________ 条件.(填“充要”、“充分不必要”、“必要不充分”或“既不充分也不必要").
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22dd8b3dc4c609bab82d356a5cc2208d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3b4d795709b0abcf47bceec2250f2f9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d187b934f9c65a0ececa8a4161fb7025.png)
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2020-02-07更新
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2卷引用:2020届江苏省扬州市高三上学期期末数学试题
解题方法
6 . 如图,在平面直角坐标系
中,椭圆
:
的左右焦点分别为
,
,椭圆右顶点为
,点
在圆
:
上.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/45cdb14c-871e-4a9f-87ed-396f44b7cc20.png?resizew=233)
(1)求椭圆
的标准方程;
(2)点
在椭圆
上,且位于第四象限,点
在圆
上,且位于第一象限,已知
,求直线
的斜率.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eed6b9540857e386651e191a0a5b5a98.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/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bed49917754987e3e7183a222d90f0cf.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/30/45cdb14c-871e-4a9f-87ed-396f44b7cc20.png?resizew=233)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/965d63c773814e8c309190e09fe0f16c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d8ad9e94d07405a6be585f81a0d623b.png)
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2020-02-07更新
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2卷引用:2020届江苏省常州市高三上学期期末数学试题
解题方法
7 . 在平面直角坐标系
中,双曲线
:
的右顶点为
,过
作
轴的垂线与
的一条渐近线交于点
,若
,则
的离心率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb74c0c2d1e5305cf55cfb9605929268.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/918e047b9e13bcc736020457b63b234f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
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8 . 如图,在四棱锥P-ABCD中,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6fd2407e4e38a97160c7dd58eb65d06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe7b991142a57e201600300591bf1e24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37b5b31212b821df73126c3a3a62e748.png)
,
平面PAB,
,点E满足
.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/b9fc791c-cc85-489d-a5e2-43d44688ad52.png?resizew=144)
(1)证明:
;
(2)求二面角A-PD-E的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6fd2407e4e38a97160c7dd58eb65d06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fe7b991142a57e201600300591bf1e24.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37b5b31212b821df73126c3a3a62e748.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34e0a957a55460c72673c0f2ee90dbb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca5dd496ee0c1170ef6dcc48266ee444.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3c54c32a0c1846b04229f48a8f5f1913.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ede7aaac78841e465d0896fa6afa5da3.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/22/b9fc791c-cc85-489d-a5e2-43d44688ad52.png?resizew=144)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cdd2adb9ba62d9ff017e2e743aed277.png)
(2)求二面角A-PD-E的余弦值.
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2020-02-01更新
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9卷引用:2020届山东省枣庄、滕州市高三上学期期末考试数学试题
2020届山东省枣庄、滕州市高三上学期期末考试数学试题江苏省南通市2020-2021学年高三上学期期末模拟数学试题2020届山东省潍坊市高三2月数学模拟试题(二)(已下线)备战2020年高考数学之考场再现(山东专版)03(已下线)第9篇——立体几何与空间向量-新高考山东专题汇编(已下线)考点23 运用空间向量解决立体几何问题-2021年高考数学三年真题与两年模拟考点分类解读(新高考地区专用)(已下线)专题04 空间角——2020年高考数学母题题源解密(山东、海南专版)江苏省无锡市南菁高级中学2020-2021学年高二上学期12月阶段性考试数学试题(已下线)黄金卷08 【赢在高考·黄金20卷】备战2021年高考数学全真模拟卷(广东专用)
9 . 如图,在三棱柱
中,侧面
为正方形,侧面
为菱形,
,平面
平面
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/2ef6705b-4cb0-4c93-8332-2919c906fc73.png?resizew=172)
(1)求直线
与平面
所成角的正弦值;
(2)求二面角
的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57eb483244073b76d7acd49feaf18280.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ce04b35c265cc9c48b60204bd2f718ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58cc6184b191e6da43911e701121517e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/23/2ef6705b-4cb0-4c93-8332-2919c906fc73.png?resizew=172)
(1)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24bb49fdc6b6bbb2449fdf8a0de769d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9edc50f7febbc2d5d8dcdc23a3630a7.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dfb64c679bf4a62e5ee092d8885fc09.png)
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2020-01-31更新
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3卷引用:2020届江苏省徐州市高三上学期第一次质量抽测数学试题
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10 . 在平面直角坐标系
中,双曲线
的右准线与渐近线的交点在抛物线
上,则实数
的值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a218602e8e3a52f74f760059aa7014.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fc58c62444bf42a25289c45425a00f2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
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