A shooter wants to fire a bullet in such a way thats its horizontal range is equal to three times its maximum height. At what angle should he fire the bullet to achieve this

Consider the following position function. find (a) the velocity and the speed of the object and (b) the acceleration of the object. bold r left parenthesis t right parenthesisr(t)equals=left angle 6 t superscript 4 baseline comma 2 t cubed right angle6t4,2t3 for tgreater than or equals≥0