如图，⊙O半径为3，Rt△ABC的顶点A，B在⊙O上，∠A=30°，点C在⊙O内，当点A在圆上运动时，OC的最小值为

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如图，⊙O半径为3，Rt△ABC的顶点A，B在⊙O上，∠A=30°，点C在⊙O内，当点A在圆上运动时，OC的最小值为（）

A： $\sqrt{2}$

B： $\frac{3}{2}$

C： $\sqrt{3}$

D：2

上一题下一题 0.0难度选择题更新时间:2011-07-11 05:21:16

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C

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Dear friend,
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