Answer: 30°
Notes:
∠PRQ = 60°
∠PRS = 180° - 60° = 120°
=>∠PSR + ∠RPS = 60°
As RS = PR
∴ ∠PSR = ∠RPS
∴ ∠PSR = $latex \frac{60^{\circ}}{2}&s=1$ $latex = 30^{\circ}$
Hence option [B] is the right answer.
∠PRQ = 60°
∠PRS = 180° - 60° = 120°
=>∠PSR + ∠RPS = 60°
As RS = PR
∴ ∠PSR = ∠RPS
∴ ∠PSR = $latex \frac{60^{\circ}}{2}&s=1$ $latex = 30^{\circ}$
Hence option [B] is the right answer.