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已知:如图,AB切⊙O于点B,OA与⊙O交于点C,点P在⊙O上,若∠BAC=40...
已知:如图,AB切⊙O于点B,OA与⊙O交于点C,点P在⊙O上,若∠BAC=40°,则∠BPC的度数为( )
![manfen5.com 满分网](http://img.manfen5.com/res/CZSX/web/STSource/20131022160520926947917/SYS201310221605209269479007_ST/images0.png)
A.20°
B.25°
C.30°
D.40°
考点分析:
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