Tolong bantu soalnya besok di kumpulin

soal no 2) sudut OBA = OAB = 60°
sudut AOB = 60° [180° - (OAB + OBA)]
soal no 3) sudut P = Q = 30°
sudut T = 120° [180° - (P + Q)]
sudut S = 60° (1/2 T)