名校
解题方法
1 . 记
的内角
的对边分别为
,若
,则
的面积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccaecbe2cfa3762326d44acd01ad1850.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2 . 重庆市酉阳山正阳楼现已竣工,它的建筑风格独特,融合了传统与现代的元素,现已成为新的网红打卡地.黔江中学高一21班某同学周末参加户外实践活动,为了测量楼高
,在
处测得楼顶
仰角为
,向右前行25米到达点
,此时测得楼顶
的仰角为
,梯步DF长为2.7米,坡度(即坡面的垂直高度
和水平宽度
的比)为
,则楼高为
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a83fdd2ba72a2dba0b6b10bb3e06b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5da080fd41cf18224a1b4433e5d3a2b4.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/32aa5ec1a5466d6a7587c41ddb2becfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3eabd5f3a86afe49dcd70571e2b96cfd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db20862b954cd1886f4765657a46d91c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e78ef615b8eb577818081e8a515fe473.png)
A.24米 | B.23.5米 | C.23.65米 | D.22.65米 |
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3 . 如图,已知四边形
是平行四边形,
分别是
的中点,点P在平面
内的射影为
与平面
所成角的正切值为2,则直线
与
所成角的余弦值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7789a500686c7a73770404ead6af0590.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1457d2e76a5b86de1abf121c51eb9d35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b0a09ed9c929979697fa393e01940aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c884b508394b3ab50734b584d9ec783c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
4 . 在
中,
,
边的高等于
,则
的值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1af98f1fb74e141fe4652c337f27bc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/50fbe2a53ea08038a9faa015ea5cf617.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c8e5d4f93699f8dcffb0e7840ca5597e.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
5 . 向量
,
满足
,
,且
,不等式
恒成立.函数
的最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/329d4084d39747fd31ba0b94977bb51f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/57a4ea73b54e897c24a8ba29f6ef95bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ea7936ad4048b3fc87a81d5469ec33e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/663f69fa39b32a6e324dce0a18c1a8c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2ab7091a3256715f83f9ce74e5b7a151.png)
A.![]() | B.1 | C.![]() | D.![]() |
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2024-06-10更新
|
594次组卷
|
2卷引用:重庆市乌江新高考协作体2023-2024学年高二下学期第二阶段性学业质量联合调研抽测(5月)数学试题
名校
解题方法
6 . 设
,
分别为双曲线
(
,
)的左、右焦点,过
且斜率为
的直线
与
右支交于点
,与
左支交于点
,点
满足
,
,则
的离心率为( )
![](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/2c5c2e64358e0ec7aa142c336d970306.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67ca5fd57c2c2fcc3c7a574fdd1467d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3fb78c5f885034612c0e030b920143d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d6f6a400b99697ddeeb95d7bb55e428.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc09520fb9d0ddef3b11171fd14695c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9fe3254ef6c8569f7091aa675ae99e9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
2024-06-10更新
|
363次组卷
|
2卷引用:重庆市乌江新高考协作体2023-2024学年高二下学期第二阶段性学业质量联合调研抽测(5月)数学试题
名校
解题方法
7 . 已知椭圆
的左焦点为
,直线
与C分别交于
两点(A在x轴上方),与y轴交于点
为坐标原点.若
,则C的离心率为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad523e69a1bf925e73a22900b9855df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04add41d4f548a8cca7e06703c8f2d64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a96481f101bf8ff25b231faca8c24b71.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/01c74a907dda6bb7d9d56d009d9df253.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a7c765f23652ca1f8c3742eaddbe036.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f841e62aea175c7de4732a2d733aaa4.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
解题方法
8 .
的三边
所对的角为
,
,则下列说法不正确 的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0c63191b402ed89bc5b0762b5262dd54.png)
A.![]() |
B.若![]() ![]() ![]() |
C.当![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() |
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9 . 已知
分别表示
中内角A,B,C所对边的长,其中
,则
的周长为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e6bab504ad14fe425203053ecc5b415.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
A.6 | B.8 | C.![]() | D.![]() |
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10 . 在
中,角A、B、C的对边分别为a、b、c,若
,
,角A的平分线与BC交于D点,点E满足
,则
=( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1af98f1fb74e141fe4652c337f27bc9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a92fe113cbecdb1a22767f2345e8864e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ea8abb4cab55296ca7fc63de0af0aae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d26a979e838526de33c1622cfcb895a4.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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