TP and TQ are tangents to a circle centre 0 and r is a point on the circumference of the circle as shown in the figure. If angle PTQ = 45o, what is the magnitude of the angle PRO?
A.
45
B.
135
C.
40
D.
76\(\frac{1}{2}\)
E.
52\(\frac{1}{2}\)
Correct answer is D
PTQ = 45o
< PRQ = 76\(\frac{1}{2}\)