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September 22, 2014

September 22, 2014

Posted by **please..anyone help!!** on Tuesday, March 19, 2013 at 7:07am.

- simple GEOMETRY!! -
**drwls**, Tuesday, March 19, 2013 at 7:19amConsider the sum of the angles in triangle BDC. The two acute angles of that triangle are 60/2 and 30/2.

ÚBDC is the remaining obtuse angle.

ÚBDC = 180 - (15 + 30) = 135 ∘

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