andrieli2015 andrieli2015

19-03-2015
Mathematics

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m (AOC) = 70, m (COE) = 60; B is bisect AOC; OD is bissertriz Coe; calculate the extent of BOD.

m AOC 70 m COE 60 B is bisect AOC OD is bissertriz Coe calculate the extent of BOD class=

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konrad509 konrad509

19-03-2015

[tex]m\angle BOD=m\angle BOC+m\angle COD\\\\ m \angle BOC=\dfrac{1}{2}m \angle AOC=\dfrac{1}{2}\cdot70=35\\ m \angle COD=\dfrac{1}{2}m \angle COE=\dfrac{1}{2}\cdot60=30\\\\ m\angle BOD=35+30=65[/tex]

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