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

In ΔOQR

OQ = QR

∠ORQ = ∠QOR = n°

∠PQO = ∠PRQ + ∠QOR = 2n° (exterior angle)

In ΔPOQ

∠PQO = ∠QPO = 2n (radius)

Now, in ΔPOR

∠POS = ∠ORP + ∠OPR (exterior angle)

∠POS = n + 2n = 3n°