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(2009•成都)如图,A、B、C是⊙O上的三点,以BC为一边,作∠CBD=∠A...
(2009•成都)如图,A、B、C是⊙O上的三点,以BC为一边,作∠CBD=∠ABC,过BC上一点P,作PE∥AB交BD于点E.若∠AOC=60°,BE=3,则点P到弦AB的距离为
.
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