Aprojectile is shot from a cannon. the fixed parameters are the acceleration of gravity,    g=9.8 m/sec2, and the muzzle velocity, v0=500 m/sec, at which the projectile leaves the cannon. the angle θ, in degrees, between the muzzle of the cannon and the ground can vary. the range of the projectile is f(θ)=vo^2/g sin πθ/90=25510 sin πθ/90 meters.