满分5 >
高中数学试题 >
设地球的半径为R,在北纬45°圈上有两个点A、B,A在西经40°,B在东经50°...
设地球的半径为R,在北纬45°圈上有两个点A、B,A在西经40°,B在东经50°,则A、B两点间的球面距离为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225134671346777/SYS201311012251346713467006_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225134671346777/SYS201311012251346713467006_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225134671346777/SYS201311012251346713467006_ST/2.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225134671346777/SYS201311012251346713467006_ST/3.png)
考点分析:
相关试题推荐
已知正四棱锥S-ABCD的侧棱长与底面边长都相等,E是SB的中点,则AE、SD所成的角的余弦值为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225134671346777/SYS201311012251346713467005_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225134671346777/SYS201311012251346713467005_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225134671346777/SYS201311012251346713467005_ST/2.png)
D.
查看答案
我校有4位教师在某一年级的4个班中各教一个班的数学,一次数学检测时,要求每位教师不能在本班监考,则监考的方法有( )
A.8种
B.9种
C.10种
D.11种
查看答案
给出下列四个命题,其中正确的是( )
A.在空间若两条直线不相交,则它们一定平行
B.直线a不平行于平面α,则a不平行于α内任何一条直线
C.两平面与同一直线所成的角相等,则两平面平行
D.若已知四个点不共面,则其中任意三点不共线
查看答案
在(ax-1)
7展开式中含x
4项的系数为-35,则a等于( )
A.±1
B.-1
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225134671346777/SYS201311012251346713467002_ST/0.png)
D.
查看答案
已知
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225134671346777/SYS201311012251346713467001_ST/0.png)
=(3λ+1,0,2λ),
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225134671346777/SYS201311012251346713467001_ST/1.png)
=(1,λ-1,λ)若
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225134671346777/SYS201311012251346713467001_ST/2.png)
⊥
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225134671346777/SYS201311012251346713467001_ST/3.png)
,则λ的值为( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225134671346777/SYS201311012251346713467001_ST/4.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225134671346777/SYS201311012251346713467001_ST/5.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131101225134671346777/SYS201311012251346713467001_ST/6.png)
D.
查看答案