O is a point inside $\triangle ABC$ such that $\angle OBA = \angle OBC = 20°$ , $\angle OCB = 10°$ and $\angle OCA = 30°$.
$\angle OAC = ?$
Find angle OAC
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- Fahim Shahriar
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Unread post by Fahim Shahriar » Sun Feb 24, 2013 2:26 pm
Name: Fahim Shahriar Shakkhor
Notre Dame College
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