Optimal angle for a projectile (K-A)

Optimal angle for a projectile part 1: Components of initial velocity (K-A)

Optimal angle for a projectile part 2: Hangtime (K-A)

Optimal angle for a projectile part 3: Horizontal distance as a function of angle (and speed) (K-A)

Optimal angle for a projectile part 4: Finding the optimal angle and distance with a bit of calculus (K-A)