Answer:
To maximize the range with respect to the firing angle θ we differentiate R with respect to θ and set this equal to 0. g 2 ∙ cos 2θ ( ) ∙ 0 therefore 2θ π 2 from which we obtain θ π 4 or 45 degrees. Suppose now we fire the projectile up a ramp which makes an angle α with respect to the horizontal.
Explanation: i hope it helpss you
