In the diagram, O is the centre of the circle, \(\bar{RT}\) is a diameter, < PQT = 33\(^o\) and < TOS = 76\(^o\). Using the diagram, find the value of angle PTR.
Attached Figure / Diagram
A
76o
B
71o
C
57o
D
33o
Verified Correct Answer: C.
Step-by-Step Mathematical Solution
PTR = 180º - (90 + 33)º
= 180º - 123
= 57º
Source: Myschool Past Questions Archive (Record #45785)