Ответ:
а) ∠ AOB = 11°
б) ∠ DOK = 135° - 50° = 85°
в) ∠ COF = 90° - 30° = 60°
г) ∠ FOM = 90°
д) ∠ COL = 150° - 30° = 120°
е) ∠ AOM = 180°
ж) ∠ KOE = 110° - 45° = 65°
и) ∠ LOK = 45° - 30° = 15°
к) ∠ EOG = 110° - 65° = 45°
Arcsin корень3/2arcsin корень3/2=П/3+П/3=2П/3
х^2+5х+5=х+2
х^2+4х+3=0
Д=16-12=4
х1=-3
х2=-1