名校
1 . 如图,四棱锥
中,
,
,
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/7/a67eb257-9aec-47ee-b103-2e25f5cebae5.png?resizew=176)
(1)证明:
;
(2)若二面角
的大小为
,求直线
与平面
所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5eef366aa22fcab1f1578f55e24a5038.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b7b5ea5627440c19999a9039eaa1c06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a58a622e2b1a239f2f96aa1501e9799.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/7/a67eb257-9aec-47ee-b103-2e25f5cebae5.png?resizew=176)
(1)证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/307d38cc7012c328f1f22aa793fe76d7.png)
(2)若二面角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c911b404bbb8f8d5f1470585fa31ad97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6c0927afc571a7c966c98192040979e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80f747eb5b2d21c9de962cbfd4ec4bb7.png)
您最近一年使用:0次
名校
解题方法
2 . 如图,在平行六面体
中,
,
,
,
,点P满足
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/10/d7de5e5c-6d65-4483-a9f8-d1d4bea1be68.png?resizew=180)
(1)证明:O,P,
三点共线;
(2)求直线
与平面PAB所成角的正弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a23f01af749100e1888bba06268843db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27db558e8db4c957654c8e5cecd2d2dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e8d927585a17c2e98ef7d5a9589a26ac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/051166055185ba78ed6c4260c14059a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b555561fe89500911f265677801811fd.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/10/d7de5e5c-6d65-4483-a9f8-d1d4bea1be68.png?resizew=180)
(1)证明:O,P,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
(2)求直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ee8456443402a25b1e25d35ff7e1c98.png)
您最近一年使用:0次
名校
解题方法
3 . 如图所示,在长方体
中,
,
在棱
上,且
.
,求平面
截长方体所得截面的面积
(2)若点
满足
,求平面
与
所成夹角的余弦值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee52cea67e7d0a82c4b8ed1d9fcd55f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/394c5d2f55221975503be8aa18022480.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/901c9e0d6c246c195b65100f3f622899.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bc46688d8723cf2003fc25890265200.png)
(2)若点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f74bd823200bb6dfb1c1721345f941ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5bc0580c6c53d00438fcf63bcbc5179.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/533677cab68214d89c7f2ee1a63650a1.png)
您最近一年使用:0次
2024-03-10更新
|
644次组卷
|
3卷引用:云南省昆明市第三中学2023-2024学年高二下学期第二次综合测试(4月)数学试题
名校
4 . 我们知道,二次函数的图象是抛物线.已知函数
,则它的焦点坐标为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/925d1e86f465061295690ccb4d5f48fb.png)
您最近一年使用:0次
名校
5 . 一动圆圆E与圆
外切,同时与圆
内切.
(1)求动圆圆心E的轨迹方程;
(2)设A为E的右顶点,若直线
与x轴交于点M,与E相交于点B,C(点B在点M,C之间),若N为线段
上的点,且满足
,证明:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f518c9fc2dacbf894182827198b1ac09.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a22d893a5ea8802c545df528d6278eba.png)
(1)求动圆圆心E的轨迹方程;
(2)设A为E的右顶点,若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/972c0a709b5da9da4241971c468dcb54.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a81c7bff1585e43eb422287e0a8f258.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ff6689d2a34aba1b9215a83785d7b3a.png)
您最近一年使用:0次
名校
解题方法
6 . 已知抛物线
与直线
在第一、四象限分别交于A,B两点,F是抛物线的焦点,O是坐标原点,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/37ab7408ffcefcb8e5e1ad4a9c58f1b1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a20b7da13594244503f88078a57837f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a5b2bd9904cdc50ef38a57fd3061c97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e5085e3cdef9ea6c564e079f745d6fdb.png)
您最近一年使用:0次
7 . 双曲线具有如下光学性质:如图
,
是双曲线的左、右焦点,从右焦点
发出的光线
交双曲线右支于点
,经双曲线反射后,反射光线
的反向延长线过左焦点
.若双曲线
的方程为
,下列结论正确的是( )
![](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/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5076289823db419f94e9c0c8f4aafd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7c58fa4a337f0b81b991fb32e8e6e3c0.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/3/11/05414404-5c8b-4117-b234-c114ec49abfe.png?resizew=179)
A.若![]() ![]() |
B.当反射光线![]() ![]() ![]() |
C.反射光线![]() ![]() ![]() |
D.记点![]() ![]() ![]() ![]() |
您最近一年使用:0次
2024-03-06更新
|
535次组卷
|
4卷引用:云南省昆明市官渡区第一中学2023-2024学年高二下学期3月月考数学试卷
名校
解题方法
8 . 直线
:
与直线
:
平行,则“
”是“
”的( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9b0f5f44abbc6544a2f672b025b013.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72f3d8a8726140e17d9daf306908e99b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f6f17bc385bafb37e8f964e5eb99cd0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b128ee884fd2af03253dfaa244ceff6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/027830fc47290062692964077ee481e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f22a4a0dd7307a1323d25331e60782d8.png)
A.充分不必要条件 | B.充要条件 |
C.必要不充分条件 | D.既不充分也不必要 |
您最近一年使用:0次
2024-03-06更新
|
794次组卷
|
4卷引用:云南省昆明市官渡区第一中学2023-2024学年高二下学期3月月考数学试卷
9 . 已知椭圆
:
的短轴长等于
,离心率
.
(1)求椭圆
的方程;
(2)过右焦点
的直线
与椭圆
交于
、
两点,线段
的垂直平分线交
轴于点
,证明:
为定值.
![](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/38387ba1cadfd3dfc4dea4ca9f613cea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d5c7316976a221c051a2c14df80b1347.png)
(1)求椭圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
(2)过右焦点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.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/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/252531955c6872a2764fbeea4ec8a557.png)
您最近一年使用:0次
2024-03-03更新
|
1369次组卷
|
3卷引用:云南省昆明市第一中学、银川一中2024届高三下学期联合考试一模数学试卷
名校
10 . 如图,直三棱柱
中,
,且
.
平面
;
(2)
,
分别为棱
,
的中点,点
在线段
上,若平面
与平面
的夹角的余弦值为
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/42d3a82b8e587ee890467835bc4e854c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36c4559d27e3905980d1a4f1856f07de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea02cbe8d8991fe4fead6cf4a5880b83.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e16f65c3a318220c2f5baac171bbb61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a211ad5a06b505b8365a62c1946f3cb7.png)
(2)
![](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/9d88bf46ad08f9677c37eed1d0369329.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11ddc92d84d188c66b435664a7e7b5a4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22ce50ba5e349425274f05d46d120a74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/64f1145c162038df3c7184d9201c628e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c592295dff53a0bb75fcaceba9cf3b8e.png)
您最近一年使用:0次
2024-03-03更新
|
1230次组卷
|
3卷引用:云南省昆明市第一中学、银川一中2024届高三下学期联合考试一模数学试卷