名校
1 . 已知
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7741cbc666e68aa4beb0087a6cd7ade0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aaa3d3ca8ae9c034b384ba8267808553.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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名校
2 .
=__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b36cf36fa791d12375ae81c90a17b7c.png)
您最近一年使用:0次
2020-01-09更新
|
689次组卷
|
3卷引用:吉林省长春市田家炳实验中学2019-2020学年高一上学期期末数学试题
名校
3 . 已知
,
,
,则
( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fa7d16ad4a2bc3783acd4886adfd8567.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/90e1c889eda87211338a5082a82f34be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/409b2d3582ab6c7f4fdf65dd10f121c8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/00b80751c98f9991b9cfc03923a98834.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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2020-02-14更新
|
1001次组卷
|
4卷引用:2019届重庆市高三4月(二诊)调研测试卷(康德版)文科数学试题
名校
4 . 在平面直角坐标系
中,先将线段OP绕原点O按逆时针方向旋转角
再将OP的长度伸长为原来的
倍,得到
我们把这个过程称为对点P进行一次T,
变换得到点
例如对点P
进行一次
变换,得到点![](https://staticzujuan.xkw.com/quesimg/Upload/formula/150901b786f6646d2db9be33a7aed4d3.png)
(1)试求对点
进行一次
变换后得到点
的坐标;
(2)已知对点
进行一次
换后得到点
求对点
再进行一次
变换后得到点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7038a3e4975c5200d16803885eef7b3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/352bee5fea6e0f11fffe7decf7ab35c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b87bf7395e0648e156644b8b639644e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a850932927deee38a046bfc236bb35be.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5acee354aaa76e0990087cc075172a86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a7ccf6ada817b9d57fe30a79bacaf23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4acfac1b712c66bba5e73c98fd4b1ca2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/150901b786f6646d2db9be33a7aed4d3.png)
(1)试求对点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea191cdc92920c76fe66702d99130fd9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/616f909e7723fb33b091450010622b1c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a18722354086c42e62334983fc50eb6a.png)
(2)已知对点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3ff60547c603c3a3f6e76755723e1b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa1f08f7da3bea90babef0b0e67e7dec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6592325d4f66a073a31d8dde0e1a5ed5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa1f08f7da3bea90babef0b0e67e7dec.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a71fc9c0068109dad1382354570665.png)
您最近一年使用:0次
名校
5 . △ABC中,若
最长的边长为1cm,则最短边的长度为_____ cm.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9be135d40a33261bf4912d533a53ec36.png)
您最近一年使用:0次
2020-01-01更新
|
309次组卷
|
5卷引用:上海市青浦高级中学2018-2019学年高一下学期3月质量检测数学试题
上海市青浦高级中学2018-2019学年高一下学期3月质量检测数学试题(已下线)第6章三角(能力提升)-2020-2021学年高一数学下册单元测试定心卷(沪教版2020必修第二册)(已下线)高一期末押题04-2020-2021学年高一数学下学期期末专项复习(沪教版2020)(已下线)期中全真模拟试卷(5)-2020-2021学年高一数学下册期中期末考试高分直通车(沪教版2020必修第二册)(已下线)第20讲 期末复习(练习)提升卷-【教育机构专用】2021年春季高一数学辅导讲义(沪教版2020必修第二册)
解题方法
6 .
的值是___________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1fd90c9ff8a48465550e329fbcbd46c6.png)
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2020-07-05更新
|
1053次组卷
|
7卷引用:陕西省黄陵中学2017-2018学年高二(重点班)上学期开学考试数学试题
7 . 已知
中,内角
、
、
的对边分别为
、
、
,且
.
(Ⅰ)求证:
、
、
成等差数列;
(Ⅱ)求函数
取得最大值时角
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.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/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0ad7060a5591a0cc7d9e596ea76cb08.png)
(Ⅰ)求证:
![](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)
(Ⅱ)求函数
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f3b026a73452f5c358e01b51adc3191.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
您最近一年使用:0次
8 . 在平面直角坐标系
中,以
轴为始边,作两个角
,它们终边分别经过点
和
,其中
,
,且
.
(1)求
的值;
(2)求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c3e5af20b2f8c1fba4470f9650989e51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c4e288596fa3811dd2c17bded60e82e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/348a8b9ebfdd3e7e5c92f9f192e07104.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c54d55611c95cdd49c898ee6b0e47c7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a892dbcef7934d97016bb190d94e0bc3.png)
(1)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed5ff5a2e7663e6a21ccea3149a10113.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9c1f914da4657eca7865982b130b299.png)
您最近一年使用:0次
2019-09-19更新
|
641次组卷
|
2卷引用:河南省南阳市2018-2019学年高一下学期期末考试数学试题
名校
9 . 已知
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e3397da9974613f3c4f9466643eebd4.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9a12ba8cf669274057a9c06d297cfa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/29591e1c9707645880afba07a6eb6f34.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4e3397da9974613f3c4f9466643eebd4.png)
您最近一年使用:0次
10 . 已知
为锐角,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d3564b37bc135e9c97bb002c5c1905e.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b291445e61f53061200d5d0d31f678.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d3564b37bc135e9c97bb002c5c1905e.png)
您最近一年使用:0次