# A triangle has sides A, B, and C. Sides A and B are of lengths 7 and 2, respectively, and the angle between A and B is pi/3. What is the length of side C?

Length of side color(brown)(c = 5.362
c = sqrt(a^2 + b^2 - (2 * 7 * 2 cos (pi/3) ) = 5.362