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如图,在直角△ABC中,∠C=90°,若AB=5,AC=4,则sinB=( ) ...
如图,在直角△ABC中,∠C=90°,若AB=5,AC=4,则sinB=( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103102712452361501/SYS201311031027124523615020_ST/images0.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103102712452361501/SYS201311031027124523615020_ST/0.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103102712452361501/SYS201311031027124523615020_ST/1.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103102712452361501/SYS201311031027124523615020_ST/2.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131103102712452361501/SYS201311031027124523615020_ST/3.png)
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