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December 6, 2016

Homework Help: math

Posted by nbvhj on Monday, August 6, 2007 at 11:18am.

Prove the following: if, in a triangle ABC,BA =CB
O in atriangle
mÐ BAO = mÐ OAC = 20°,
mÐ ACO = 10°,
and mÐ OCB = 30°,
then mÐ OBC = 80°.

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