O' is the centre of the inscribed circle...

`O`' is the centre of the inscribed circle in a `30^@ - 60^@ -90^@ DeltaABC` with right angled at C. If the circle is tangent to AB at D then the angle `/_COD` is

A

`120^(@)`

B

`135^(@)`

C

`150^(@)`

D

`165^(@)`

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The correct Answer is:

C

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