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Questions  

The horizontal range and the maximum height of a projectile are equal. The angle of projection of the projectile is                                           

a
θ = tan-114
b
θ = tan-14
c
θ = tan-12
d
θ = 450

detailed solution

Correct option is B

Given, R = HRange,  R = u2 (2 sinθcosθ)g Height,  H = u2sin2θ2gHence,  u2(2sinθcosθ)g=u2sin2θ2g             2cosθ=sinθ2⇒  tanθ=4⇒θ=tan-1(4)

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