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(2007•泰安)如图,△ABC是等腰直角三角形,且∠ACB=90度.曲线CDE...
(2007•泰安)如图,△ABC是等腰直角三角形,且∠ACB=90度.曲线CDEF…叫做“等腰直角三角形的渐开线”,其中
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110454988376957/SYS201310191104549883769007_ST/0.png)
,
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110454988376957/SYS201310191104549883769007_ST/1.png)
,
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110454988376957/SYS201310191104549883769007_ST/2.png)
,…的圆心依次按A,B,C循环.如果AC=1,那么曲线CDEF和线段CF围成图形的面积为( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110454988376957/SYS201310191104549883769007_ST/images3.png)
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110454988376957/SYS201310191104549883769007_ST/3.png)
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110454988376957/SYS201310191104549883769007_ST/4.png)
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110454988376957/SYS201310191104549883769007_ST/5.png)
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131019110454988376957/SYS201310191104549883769007_ST/6.png)
考点分析:
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