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In the given figure (not drawn to scale)...

In the given figure (not drawn to scale), BD is a diameter of the circle with centre O. C and A are two points on the circle. BA and CD, when produced, meet at E. If `angleDOC= 60^@ and angleABD= 23^@,` then find `angleOBC.`

A

`60^@`

B

`30^@`

C

`45^@`

D

`67^@`

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B
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MTG IIT JEE FOUNDATION-CIRCLES-Olympiad/HOTS Corner
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