满分5 >
初中数学试题 >
(2003•山西)已知⊙O的半径为5,AB是弦,P是直线AB上的一点,PB=3,...
(2003•山西)已知⊙O的半径为5,AB是弦,P是直线AB上的一点,PB=3,AB=8,则tan∠OPA的值为( )
A.3
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232441953414449/SYS201310212324419534144005_ST/0.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232441953414449/SYS201310212324419534144005_ST/1.png)
或
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232441953414449/SYS201310212324419534144005_ST/2.png)
D.3或
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232441953414449/SYS201310212324419534144005_ST/3.png)
考点分析:
相关试题推荐
(2003•成都)在△ABC中,已知AC=3,BC=4,AB=5,那么下列结论成立的是( )
A.sinA=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232441953414449/SYS201310212324419534144004_ST/0.png)
B.cosA=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232441953414449/SYS201310212324419534144004_ST/1.png)
C.tanA=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232441953414449/SYS201310212324419534144004_ST/2.png)
D.cotA=
查看答案
(2003•镇江)如图,Rt△ABC中,∠ACB=90°,CD⊥AB,D为垂足,若AC=4,BC=3,则sin∠ACD的值为( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232441953414449/SYS201310212324419534144003_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232441953414449/SYS201310212324419534144003_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232441953414449/SYS201310212324419534144003_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232441953414449/SYS201310212324419534144003_ST/2.png)
D.
查看答案
(2004•云南)在△ABC中,∠C=90°,如果tanA=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232441953414449/SYS201310212324419534144002_ST/0.png)
,那么sinB的值等于( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232441953414449/SYS201310212324419534144002_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232441953414449/SYS201310212324419534144002_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232441953414449/SYS201310212324419534144002_ST/3.png)
D.
查看答案
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232441953414449/SYS201310212324419534144001_ST/images0.png)
(2003•泰安)如图,菱形纸片ABCD的一内角为60°,边长为2,将它绕O点顺时针旋转90°后到A′B′C′D′位置,则旋转前后两菱形重叠部分多边形的周长是( )
A.8
B.4(
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232441953414449/SYS201310212324419534144001_ST/0.png)
-1)
C.8(
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232441953414449/SYS201310212324419534144001_ST/1.png)
-1)
D.4(
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232441953414449/SYS201310212324419534144001_ST/2.png)
+1)
查看答案
(2003•滨州)在“爱我滨州”白色垃圾清理活动中,同学们从学校A东行500m到B,然后北行至指定地点C,若图中AB=18mm.则下列表示C点实际位置的四个结果中,正确的是(通过度量计算选择)( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232441953414449/SYS201310212324419534144000_ST/images0.png)
A.528m,北偏东27°
B.584m,北偏东27°
C.556m,北偏东63°
D.612m,北偏东63°
查看答案