A shot is fired from a point at a distance of 200 m from the foot of a tower 100 m high so that it just passes over it. The direction of shot is
30°
45o
60o
70o
Hmax=100m,Rmax.=2×200=400m∴tanθ=4×100400=1 ∵HR=tanθ4or θ=45∘