Prove that the maximum horizontal range 'is four times the maximum height attained by the projectile, when fired at an inclination so as to have maximum horizontal

Prove that the maximum horizontal range 'is four times the maximum hei

1.	Prove that the maximum horizontal range 'is four times the maximum height attained by the projectile, when fired at an inclination so as to have maximum horizontal
Answer» Solution :`R_max.=mu^2/g,` when `theta=45^@` Then the height ATTAINED `H=(mu^2(SIN45^@)^2)/(2G)=mu^2/(4g)=(R_max)/4` THUS `R_max=4H`