x^o = 35 + 29 (Exterior angle = sum of two interior opposite angles)
x = 55^o (∠ at the center twice ∠ at circumference) y = 110^o
∠ PSO = ∠ SPO (base ∠ S of 1sc Δ b/c PO = SO)
− ∠ PSO = (180 - 110)/2
= 35^o