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Source: — Data Sufficiency |
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by Nycgrl » Sun Jun 22, 2008 5:27 pm
NICE question

1statment <BCO> AB=OB=OC
Now angles opp to equal sides are equal => <bco =<obc =<oab ---- suff



2nd statment <COD = 60 ....<COD is exterior angle of Trngle AOC therefore <COD is twice <CAO (which can also be written as <BAO)-----suff
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