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(2002•广西)如图,MN切⊙O于点A,∠AOB=60°,那么∠BAM等于( ...
(2002•广西)如图,MN切⊙O于点A,∠AOB=60°,那么∠BAM等于( )
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A.120°
B.90°
C.60°
D.30°
考点分析:
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