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Two chords AB and CD of a circle with ce...

Two chords AB and CD of a circle with centre O intersect at P. If `angleAPC=40^(@)`. Then the value of `angleAOC+angleBOD` is

A

`50^(@)`

B

`60^(@)`

C

`80^(@)`

D

`120^(@)`

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Two lines AB and CD intersect at O. If angleAOC=50^(@) , find angleAOD, angleBOD and angleBOC .

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