名校
1 . 在四棱锥
中,底面ABCD是等腰梯形,
,
,平面
平面
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/9/3fddd46f-f511-43df-ad16-9b16f395655d.png?resizew=155)
(1)求证:
为直角三角形;
(2)若
,求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0fff774b4b0087a6f304ce930d359be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42a8b1c432c1266ec43fb9a78f7a77fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16b77a5c3865855fbb3d24f9522ced8d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d3c74b930d4e691b519965e436f2c37.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/9/3fddd46f-f511-43df-ad16-9b16f395655d.png?resizew=155)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3da7bcea5a45eeae211f5851f12a7517.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e4e97a4bd7675f12f73266254dd435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ecc407e2b3e9da16eba881fd7a83845a.png)
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2023-01-06更新
|
443次组卷
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2卷引用:新疆部分学校2023届高三上学期第一次联考数学(理)试题
名校
解题方法
2 . 如图,四棱锥
中,底面
是平行四边形,平面
底面
,
,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/8/8347c7bb-6759-4a16-b023-f15ef24878a1.png?resizew=225)
(1)求证:平面
平面
;
(2)求二面角
的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5164a3cc47e266446d49127e2ef10c37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8dc6db50a9709c3f4d84eee7bdf1250.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fa7bbd7831e9ff4f8cffc8889d34f05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/31b2cc1d0bfd22c88286880b9da1f6f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77e4907ad1efa41c6cefe931737328fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e1f4f255d191786f7d330d278868c2d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/30b0393ce62b24aa5f9b740d4cc6743b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/8/8347c7bb-6759-4a16-b023-f15ef24878a1.png?resizew=225)
(1)求证:平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed5f0cfc1049f84a04c81bd213afb8d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4eb7e9ad5486cf1c5e506b20c5469e8.png)
(2)求二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9c909cd1b6f3fa1ec39eb245e8f5c11c.png)
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2023-01-06更新
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2卷引用:新疆伊犁州霍尔果斯市苏港中学2022-2023学年高二下学期第一次教学检测数学试题
名校
解题方法
3 . 在平面直角坐标系
中,已知点
在抛物线
上,圆![](https://staticzujuan.xkw.com/quesimg/Upload/formula/696194073d11052786104e11178adf2e.png)
(1)若
,
为圆
上的动点,求线段
长度的最小值;
(2)若点
的纵坐标为4,过
的直线
与圆
相切,分别交抛物线
于
(异于点
),求证:直线
过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac8a3bffe545af2299cf999d44767206.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/696194073d11052786104e11178adf2e.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7551011cfb75b26f35b07d6617c6a18b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/280860dd039e1305a5ccc455f63e8223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23f3ffe7abc59e2f65d827c8eab8d36a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
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2022-12-11更新
|
525次组卷
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2卷引用:新疆维吾尔自治区乌鲁木齐市第四十中学2023届高三下学期4月月考理科数学试题
名校
解题方法
4 . 已知抛物线
上的点
到其焦点的距离为
.
(1)求
和
的值;
(2)若直线
交抛物线
于
、
两点,线段
的垂直平分线交抛物线
于
、
两点,求证:
、
、
、
四点共圆.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/365c238724dea5c24c3e326678c9ed54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90ce81c2674a74d4704f9ce387ef954f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bdaa19de263700a15fcf213d64a8cd57.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1010846eeec6c9da29640f5aa3f8738.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
(2)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d00a5df9d281dd4e1e45bf6a4d6fb27.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
您最近一年使用:0次
2022-09-01更新
|
1705次组卷
|
11卷引用:新疆维吾尔自治区乌鲁木齐市第十二中学2024届高三上学期9月月考数学(文)试题
新疆维吾尔自治区乌鲁木齐市第十二中学2024届高三上学期9月月考数学(文)试题四川省泸州市2021届高三三模数学(文)试题(已下线)第46讲 解析几何中的四点共圆问题-2022年新高考数学二轮专题突破精练2023版 湘教版(2019) 选修第一册 过关斩将 第3章 综合拔高练(已下线)专题7 解决曲线的几何性质的运算(提升版)四川省南充市阆中中学校2022-2023学年高三上学期10月月考数学(文)试题(已下线)考向36 直线与圆锥曲线最全归纳(十六大经典题型)-3(已下线)专题38 圆锥曲线中的圆问题-2(已下线)第五篇 向量与几何 专题10 圆锥曲线中的四点共圆问题 微点2 圆锥曲线中的四点共圆问题(二)(已下线)重难点突破15 圆锥曲线中的圆问题(四大题型)(已下线)专题03 圆锥曲线题型全归纳(九大考点)-【寒假自学课】2024年高二数学寒假提升学与练(人教A版2019)
名校
5 . 如图,在多面体
中,四边形
是矩形,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63e3a8f4ea4c49537514dd22064100f9.png)
.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/b4146b39-5172-455e-95ca-7865cb927a8b.png?resizew=188)
(1)证明:
;
(2)求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9165d9bfbb0f0d19eb482c2a4c1b29b7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b312dab930cbbb9a4bb1a99f044dab73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63e3a8f4ea4c49537514dd22064100f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307492a5106b38351e52cd4fff8b1ec8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/2/2/b4146b39-5172-455e-95ca-7865cb927a8b.png?resizew=188)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e49a850dd76dc1162ff2eda8791b772.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6aa2b5e09f8ec785c59900a529390a02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9af29254fe60a392c249c5791279e9c8.png)
您最近一年使用:0次
2023-01-16更新
|
282次组卷
|
2卷引用:新疆乌鲁木齐市第六十一中学2024届高三上学期12月月考数学试题
名校
6 . 如图,在四棱锥P-ABCD中,底面ABCD是正方形,侧棱PD⊥底面ABCD,PD=DC,E是PC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/5f500796-8bf1-4115-87cc-f983bfd11f2d.png?resizew=235)
(1)求证:
平面EBD
(2)求PB与平面EBD所成的角的正弦值
![](https://img.xkw.com/dksih/QBM/editorImg/2022/11/24/5f500796-8bf1-4115-87cc-f983bfd11f2d.png?resizew=235)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/373f735f0f04d11f1951eaef1bb78b6a.png)
(2)求PB与平面EBD所成的角的正弦值
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2022-11-22更新
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339次组卷
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6卷引用:新疆维吾尔自治区喀什第二中学2022-2023学年高二上学期第一次月考数学数学试题
7 . 如图:正方体ABCD - A1B1C1D1中,E、F、G分别是B1B、AB、BC的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/3/c0bd10d9-e64e-4a9b-821b-d6a5dcee401d.png?resizew=158)
(1)证明:D₁F⊥平面AEG;
(2)求直线BB₁与平面AEG所成角的正弦值.
![](https://img.xkw.com/dksih/QBM/editorImg/2023/1/3/c0bd10d9-e64e-4a9b-821b-d6a5dcee401d.png?resizew=158)
(1)证明:D₁F⊥平面AEG;
(2)求直线BB₁与平面AEG所成角的正弦值.
您最近一年使用:0次
名校
8 . 如图,在四棱锥
中,
平面
,底面四边形
是正方形,
,点E为
的中点.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/30/7d99bd84-62de-414f-8b64-669db69bf7d7.png?resizew=133)
(1)求证:
平面
;
(2)求平面
与平面
所成锐二面角的大小.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.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/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3f6967901d6c855864df01e7bf7a15c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/9/30/7d99bd84-62de-414f-8b64-669db69bf7d7.png?resizew=133)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e56fdf217165748fafe938b64fa08179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
(2)求平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34be4e71cabf458f17a6cd7f24bc70af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
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2022-09-29更新
|
555次组卷
|
5卷引用:新疆阿克苏市实验中学2022-2023学年高二上学期第一次月考数学试题
9 . 已知椭圆
的离心率为
,且经过点
,
为椭圆C的左右焦点,
为平面内一个动点,其中
,记直线
与椭圆C在x轴上方的交点为
,直线
与椭圆C在x轴上方的交点为
.
(1)求椭圆C的标准方程;
(2)①若
,证明:
;
②若
,探究
之间关系.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f89eef3148f2d4d09379767b4af69132.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/accf35598ee054f1bf8b6584641d6d85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4d2a97987f71835f519b462f5b8f5957.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2752e086b85f9fbb95010bf771072af9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b170470d02c85c1be9a3faff5eca0de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c30a7506331e47342fb1e7d2e12d041.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a3efb79f35db8448f3391252ab7d4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a16c755ab3fea6ca99b13193a5d7e485.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8df332f01628130c084fd46aaca0a4b7.png)
(1)求椭圆C的标准方程;
(2)①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/838d4d7fa68e89d2f57952c5eaa019d4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b54c90e36facebeb720f3531a07a467.png)
②若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/363dcefb342c51d2af3cf3b7d0599944.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62fbe72587d27b3eeb48abe809320de7.png)
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2023-02-09更新
|
669次组卷
|
4卷引用:新疆维吾尔自治区乌鲁木齐市第十二中学2024届高三下学期2月月考数学试题
名校
10 . 如图,在四棱锥
中,已知四边形
是梯形,
,
是正三角形.
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/25/683b6788-5b7e-4317-b643-bf3b4dbf07ac.png?resizew=179)
(1)求证:
;
(2)当四棱锥
体积最大时,二面角
的大小为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6be2b61f4a38e2ee2c1a01e00b3ae6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60f2693cdb3751a8fd3a5d6f597dcfbf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/17e68c3b4e4aff8c6b7f8b6189e3985f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/10/25/683b6788-5b7e-4317-b643-bf3b4dbf07ac.png?resizew=179)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3723525244e12b59101e1c0b5fb912ca.png)
(2)当四棱锥
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6be2b61f4a38e2ee2c1a01e00b3ae6c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8860d255b9c6cec4c062d73720aa8a77.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2930e3d72846688f8389ab8cf178e062.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45b8b77522dfc890b99f0a86a690de94.png)
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2022-10-23更新
|
248次组卷
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3卷引用:新疆生产建设兵团第三师图木舒克市第二中学2023届高三上学期月考数学(理)试题