Q152
In the given figure, if OQ = QR, then the value of m is:

In the given figure, if OQ = QR, then the value of m is:
A.
3n°
AnswerB.
n°
C.
2n°
D.
4n°
Answer: Option A
Solution
Answer: Option A
Solution:

∠PQO = 2n° (by exterior angle theorem)
PO = OQ (Radius)
∠OPQ = ∠OQP = 2n° (by exterior angle theorem)
∠POS = ∠OPQ + ∠ORP
m = 2n° + n°
m = 3n°