名校
解题方法
1 . 某校学生利用解三角形有关知识进行数学实践活动.
处有一栋大楼,某学生选
,
两处作为测量点,测得
的距离为
,
,
,在
处测得大楼楼顶
的仰角
为75°.
两点间的距离;
(2)求大楼的高度.
![](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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c56c87fd6bf8a44244ba51a9d244e22.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c42ed2e5bd5a0f033e24008697bf4963.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d0ec7f8ab857cd441a82389b246230a.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/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
(2)求大楼的高度.
您最近一年使用:0次
2023-04-21更新
|
1528次组卷
|
8卷引用:湖南省长沙市长郡中学2022-2023学年高一下学期期中数学试题
名校
2 . 已知
,且
是方程
的两根,则
的值是___________ ;
的值是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e761714f6940c2c06c5750e2ed80cc4e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/69d400d0ee58eb69f7643b89ec9e1ffc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b490251771387215bb9a184ded06fed1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8dc4c63a548b91061528aa11058de75.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22d521f8d021b20757d7a68107fcef1d.png)
您最近一年使用:0次
2023-04-21更新
|
273次组卷
|
2卷引用:江苏省镇江市扬中高级中学2022-2023学年高一下学期期中校际联考数学试题
解题方法
3 . 已知
是方程
的两个实数根,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dab0e25cb7c556f914e6bc15727ae556.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0b2fd66443224993fc354509c4a3163.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2218b014360e33cdf10ea1086b000ef.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
4 . 若
且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeac303e508a01609f2dbecda7793875.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0cfa792c1e362d500d3e78b5cc45f122.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7aea56a37463ce241835d0fc7a69817.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eeac303e508a01609f2dbecda7793875.png)
您最近一年使用:0次
2023-04-13更新
|
1198次组卷
|
4卷引用:上海市普陀区2023届高三二模数学试题
名校
解题方法
5 . 已知α为锐角,且
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b37d8f955cafe898413efd0ebed6d9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6c87c315baede21fb2cecda9fbf67af.png)
A.![]() | B.2 | C.![]() | D.3 |
您最近一年使用:0次
2023-04-10更新
|
647次组卷
|
2卷引用:河南省创新发展联盟2023届高三下学期二模考试数学(文)试题
名校
解题方法
6 . 已知
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ff85f9e36ab4642bc0b6ed06f290992.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33e3fd7406c2b580f461439d61d5cd17.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
7 . 已知
,
都是锐角.
(1)
,
,求
的值;
(2)
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a9da049c686ff81df5d6645ef51e993.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/77bf00f93748486dd88cc86b4f1c20ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e619d36b4b58c13da08ab8f5695bfdfb.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a29fa40a8e43bad83b47fd8aa9ac24b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a78d7cee1769295ccf05c1c87e240b79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7fee7e2969987222954a10a03d200c03.png)
您最近一年使用:0次
名校
解题方法
8 . 如图,三个相同的正方形相接,则
的值是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/2/0264a615-2bd2-4256-8050-93bf1c6640f7.png?resizew=173)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc2945a3981003a33922d838e04ddf7f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/2/0264a615-2bd2-4256-8050-93bf1c6640f7.png?resizew=173)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
解题方法
9 . 已知
,
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/495058a6ccfc4e0bbf5f7e95909e55a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bff81171e8634ac56f678a245781517a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92b1029ae8e4120c872408387aea94a3.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
10 . 已知函数
.
(1)求
的单调递减区间;
(2)若
,
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a38529fc650863b234a2d488a139bee8.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f5575206bc06573d9d9b2db926c286a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c04ca22dba343e23584976deeedf071f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48848fd9ae010eab53f3bd711a2c85c9.png)
您最近一年使用:0次