Using the law of the sines we have: (13) / (sin (40)) = (19) / (sin (C)) Clearing the angle C we have: sin (C) = (19/13) * (sin (40)) C = Asin ((19/13) * (sin (40))) C = 69.96086904 Rounding: C = 70 degrees Answer: The missing angle in the triangle using the Law of Sines is: 70 degrees option 4
