I am having a problem with a question from my calc 3 class. I don't think there is any calculus involved, however. So the problem goes like this "A shot is fired from a gun with a muzzle velocity of 1200 ft/s is to hit a target 3000 ft away. Determine the minimum angle of elevation of the gun. Okay so with the vector function equation r(t) = (v0cosøt)i + (v0sinøt -16t²)j so i set v0cosøt = 3000 and solve for t and then plug that back in for v0sinøt-16t² and set it equal to 0 and solve for ø? That's what i did and get a different angle than the solutions. Could anyone point a finger in the right direction, please? Thank You.