Triangle ABC is shown below with all three side lengths known. A non-right triangle is drawn with angles A, B, and C. The measures of angles A, B, and C are all unknown. The side length opposite angle A measures 15.1 centimeters, the side length opposite angle B measures 21.2 centimeters, and the side length opposite angle C measures 11.1 centimeters. Use the law of cosines, law of sines, and other properties of triangles to determine the missing angle measures.
