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(1999•烟台)Rt△ABC中,∠C=90°,若cosA=,则tanB的值是(...
(1999•烟台)Rt△ABC中,∠C=90°,若cosA=
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232807247312829/SYS201310212328072473128009_ST/0.png)
,则tanB的值是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232807247312829/SYS201310212328072473128009_ST/1.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232807247312829/SYS201310212328072473128009_ST/2.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232807247312829/SYS201310212328072473128009_ST/3.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131021232807247312829/SYS201310212328072473128009_ST/4.png)
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