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In the diagram, O is the centre of the circle and PQRS is a cyclic…

In the diagram, O is the centre of the circle and PQRS is a cyclic quadrilateral. Find the value of x.

A.
25^o
B.
65^o
C.
115^o
D.
130^o

Correct Answer: Option B

Explanation

x = 65^o (An interior angle of a cyclic quadrilateral = opposite exterior angle).