Question

The maximum height attained by a projectile is
found to be equal to 0.423 of horizontal range.The
angle of projection of this projectile is
a)30° b)45° c)60° d)75°​

Answer 1

Answer:

According to question,

H=0.433R

2gu2sin2θ=0.433gu2sin2θ

sin2θ=2×0.433×2sinθ.cosθ

tanθ=4×0.433=1.732

θ=tan−1(1.732)=59.990

θ≈60

The correct option is C.