In the diagram, O is the centre of the circle and PQRS is a cyclic quadrilateral. Find the value of x.
Attached Figure / Diagram
A
25o
B
65o
C
115o
D
130o
Verified Correct Answer: B.
Step-by-Step Mathematical Solution
x = 65o (An interior angle of a cyclic quadrilateral = opposite exterior angle).
Source: Myschool Past Questions Archive (Record #36417)