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如图所示,设点A是单位圆内的一定点,动点P从点A出发在圆上按逆时针方向旋转一周,...
如图所示,设点A是单位圆内的一定点,动点P从点A出发在圆上按逆时针方向旋转一周,点P所旋转过的弧
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123743429523833/SYS201310251237434295238005_ST/0.png)
的长为l,原点O到弦AP的长为d,则函数d=f(l)的图象大致是( )
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123743429523833/SYS201310251237434295238005_ST/images1.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123743429523833/SYS201310251237434295238005_ST/images2.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123743429523833/SYS201310251237434295238005_ST/images3.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123743429523833/SYS201310251237434295238005_ST/images4.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/GZSX/web/STSource/20131025123743429523833/SYS201310251237434295238005_ST/images5.png)
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