(1 pt) A gun has a muzzle speed of 60 meters per second. What angle of elevation should be used to hit an object 160 meters away?

(1 pt) A gun has a muzzle speed of 60 meters per second. What angle of elevation should be used to hit an object 160 meters away? Neglect air resistance and use g = 9.8, textrm{m}/textrm{sec}^{2} as the acceleration of gravity.