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PQRS is a cyclic quadrilateral , its di...


PQRS is a cyclic quadrilateral , its digonals intersect at O . If `/_ PRQ = 80^(@) ` and `/_ QSR = 20^(@)`, what is the measure in degrees of `/_ PSR` ?

A

`45^(@)`

B

`50^(@)`

C

`80^(@)`

D

`100^(@)`

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The correct Answer is:
D
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