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(2002•崇文区)如图,AB是半圆O的直径,C、D是半圆上的两点,半圆O的切线...
(2002•崇文区)如图,AB是半圆O的直径,C、D是半圆上的两点,半圆O的切线PC交AB的延长线于点P,∠PCB=29°,则∠ADC=( )
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A.109°
B.119°
C.120°
D.129°
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