If a projectile is thrown such that range [R] is four times than the height [h] attained then angle of projection is-
Text Solution
Verified by ExpertsThe correct answer is:
B
R = 
H = 
R = 4 H
= 4 
sin 2 θ = 2 sin2 θ
2 sin θ cos θ = 2 sin 2 θ
tan θ = 1
θ = 45º
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