In the given figure ,'O is the centre of...

In the given figure ,'O is the centre of circle ,PQ is a chord and the tangent PR at P makes an angle of `50^(@)` with PQ ,then `anglePOQ` is equal to :

A

`100^(@)`

B

`80^(@)`

C

`90^(@)`

D

`75^(@)`

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The correct Answer is:

A

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