Problem 12: A projectile is launched from point A Vo = 30 m/s with speed vo = 30 m/s. Determine the value of the launch angle a which maximizes the range R indicated in the figure. Determine the corresponding value R. 10 m Ans: a = 42.180, R = 101.25 m B Hint: First find an expression of R as a function of the 50 m launch angle a, then plot that function in MATLAB to R see where it is maximum