题目
题型:不详难度:来源:
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823032027-91199.png)
则
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823032027-80229.png)
答案
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823032027-94408.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823032027-17518.png)
解析
试题分析:因为,
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823032027-34544.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823032028-98765.png)
所以,
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823032027-80229.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823032027-94408.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823032027-17518.png)
点评:简单题,求角必定先求角的某种三角函数值,注意已知条件,确定函数名称。
核心考点
试题【若,则_________________。】;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/20190823/20190823032024-64014.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823032024-50102.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823032008-91445.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823032009-16475.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823032009-77528.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823031939-39176.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823031939-36033.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823031932-36745.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823031932-13789.png)
A.![]() | B.![]() | C.![]() | D.![]() |
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823031912-84294.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823031912-31022.png)
![](http://img.shitiku.com.cn/uploads/allimg/20190823/20190823031912-85470.png)
A.![]() | B.![]() | C.![]() | D.7 |
最新试题
- 1The workers want us ________ together with them. [ ]A.
- 2咀嚼下列哪种物质会有甜味?( )A.纤维素B.蛋白质C.脂肪D.淀粉
- 3第二次世界大战反法西斯战争取得胜利的根本原因在于A.法西斯国家对战争准备不足B.封建专制主义不得人心C.世界反法西斯联盟
- 4在三边分别为下列长度的三角形中,哪些不是直角三角形[ ]A.5,13,12 B.2,3, C.4,7,5 D
- 5如图所示,A、B两闭合线圈用同样导线且均绕成10匝,半径为rA=2rB,内有以B线圈作为理想边界的匀强磁场,若磁场均匀减
- 6We were all agreed that the cottage would a perfect hol
- 7在真空中电磁波的传播速度是 ______m/s.
- 8Name: Container Gardens by Number Cover price: $l5.95 Our pr
- 9旧时杭州有一句歇后语,叫作“钱塘江造桥”,用来比喻不可能的事。在1937年,改变这一说法的人是[ ]A.詹天佑B
- 10解下列方程:(1)2x+13-10x+16=1; (2)0.1x-0.20.02-x+10.5=3.
热门考点
- 12009年3月27日,记者从微软(中国)山东总代理商了解到,青岛市经过注册的网吧有1700多家,正版软件使用率不足10%
- 2— When would it be for you to go to the science museu
- 3下列句中划线的词都是活用词,选出活用情况不同类的一项[ ]A.其闻道也固先乎吾,吾从而师之 B.后人哀之而不鉴之
- 4—You look so tired. Why ____________ to have a rest ?— OK, t
- 5Life in the oceans ranges from the tiniest plankton ______ u
- 6读我国地理分区图,回答下列问题。(11分)(1)甲、乙、丙、丁表示我国的四大地理区域。丁是
- 7已知下列热化学方程式:Zn(s) + 1/2 O2(g)= ZnO(s) △H1;Hg(l) + 1/2 O2(g)=H
- 8听小短文,回答问题。1. How old is Mike?A. 14 B. 13
- 9化简:(1)(x﹣2y)﹣2(y﹣3x); (2)﹣3(xy﹣2x2)﹣[y2﹣(5xy﹣4x2)+2xy]; (3)已
- 10阅读理解. Experts (专家) say that students usually need eight