题目
题型:单选题难度:简单来源:不详
已知
![](http://img.shitiku.com.cn/uploads/allimg/20190824/20190824013055-45946.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190824/20190824013055-68243.png)
A.-![]() | B.-![]() | C.![]() | D.![]() |
答案
解析
![](http://img.shitiku.com.cn/uploads/allimg/20190824/20190824013056-56388.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190824/20190824013056-22554.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190824/20190824013056-78309.png)
核心考点
试题【已知,则=( )A.-B.-C.D.】;主要考察你对同角三角函数的基本关系等知识点的理解。[详细]
举一反三
![](http://img.shitiku.com.cn/uploads/allimg/20190824/20190824013050-72728.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190824/20190824013050-80288.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190824/20190824013051-57390.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190824/20190824013051-27278.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190824/20190824013051-13749.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190824/20190824013051-84727.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190824/20190824013045-61455.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190824/20190824013036-25822.png)
(2)对任意的
![](http://img.shitiku.com.cn/uploads/allimg/20190824/20190824013037-50905.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190824/20190824013037-80630.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190824/20190824013037-91364.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190824/20190824013023-42458.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190824/20190824013024-22881.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190824/20190824013019-10450.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190824/20190824013020-75870.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190824/20190824013020-83193.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
最新试题
- 1Sustainable development is long-term ____ which focuses on t
- 2阅读下面材料,在空白处填入适当的内容(不多于3个单词)或括号内单词的正确形式。David: Have you made
- 3为预防十运会开幕式期间下雨,南京提前采用了人工消雨措施.下列可用于人工降雨的物质是( )A.熟石灰B.干冰C.氮气D.
- 4(13分)辛亥革命是完整意义上的资产阶级民主革命。阅读材料,回答问题。问题一:偶然与必然张鸣认为,“起义前一个月,革命党
- 5在劳动技术课上,六名同学做的作品的数量(单位:件)分别是:4,7,3,x,6,5;若这组数据的平均数是5,则这组数据的中
- 6My brother would like to buy a good watch but ________ was a
- 7下列加划线解释有误的一项是[ ]A、可爱者盛蕃(多) B、牡丹之爱,宜乎众矣(应当) C、陶后鲜有闻(少) D、
- 8下图是地图上的一段纬线,据图回答12—13题。小题1:在P地形区修筑铁路,需要克服的主要困难有A.沙漠和戈壁中缺水问题B
- 9设NA为阿伏加德罗常数的值,下列说法中正确的是A.0.1mol氧化钠固体中离子个数为0.2NAB.1mol金刚石中含C-
- 10— What do you think of Spain? — Well, considering its divers
热门考点
- 1温家宝总理在安徽王家坝指导淮河防汛抗洪工作时深情地说,长期的抗洪斗争形成了“王家坝精神”,这就是舍小家、为大家的顾全大局
- 2在一个不透明的袋子中,装有形状、质地、大小等完全相同的1个黑球、2个白球、3个黄球、4个红球.从中随机抽取一个,那么取出
- 3Tsai Chin Chung is one of Taiwan’s most famous cartoonists,
- 4在中,角所对的边分别是,的外接圆半径,且满足;⑴求角和边的大小;⑵求的面积的最大值.
- 5句子搭配。( )1. How are you? ( )2. How do you do? (
- 6新疆隶属于我国中央政府的管辖开始于( )A.丝绸之路的开通B.西域都护府的设立C.三国鼎立局面的形成D.秦统一六国
- 7已知圆C:和直线(1)当时,求圆上的点到直线距离的最小值;(2)当直线与圆C有公共点时,求的取值范围.
- 8I can’t find my dictionary now. Tom must have taken it by mi
- 9What impressed me most was the quotation(引言) from Shakespear
- 10(8分)甲醛是一种重要的化工产品,可利用甲醇催化脱氢制备气态甲醛。甲醛与气态甲醇转化的能量关系如图所示:(1)甲醇催化脱