In the figure, PS = SR and Rx is a tangent to the circle at…

Correct Answer: Option B

Explanation

XRQ = RSQ (Alternate segment)
s = 72^o
(80^o – 72^o = 180^o)
a + b + c = 190^o = 2b + c = 180^o
2b + 108 = 180^o
2b = 72^o
b = 36^o