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In the given diagram PA and PB are tange...

In the given diagram PA and PB are tangents drawn from P to a circle with centre O. `angle OPA = 35^@` then a and b is ………

A

`a=30^@ , b=60^@`

B

`a=35^@ , b=55^@`

C

`a=40^@ , b=50^@`

D

`a=45^@ , b=45^@`

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