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In the adjoning figure O is the centre o...

In the adjoning figure O is the centre of the circle and AB is the diameter. Tangent PQ touches the circle at D. `angleBDQ=48^@`. Find the ratio of `angleDBA:angleDCB.

A

`22/7`

B

`7/22`

C

`7/12`

D

can't be determined

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The correct Answer is:
B
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