Question

Time of flight and horizontal range of a projectile are related by gt² = 2R . find the angle of projection .

Answer 1

Answer:

75.96°

Explanation:

gt² = 2R

R = gt²/2 = u²sin²∝/2g = u²sin2∝/g

sin2∝ = sin²∝/2 , ∝≠ 0

sin∝  = 4 cos ∝

tan ∝ = 4

∝ = tan∧-1 (4) = 75.96°