In the diagram above, O is the center of the circle PQRS and ∠QPS = 36^\circ. Find ∠QOS
Attached Figure / Diagram
A
36o
B
72o
C
108o
D
144o
E
288o
Verified Correct Answer: B.
Step-by-Step Mathematical Solution
< QOS = 2 < QPS (angle subtended at the centre)
\(\therefore\) < QOS = 2 x 36^\circ = 72^\circ
Source: Myschool Past Questions Archive (Record #23160)