A rescue plane is flying at constant elevation of 1200m with a speed of 430km\hr towards a point directed over a person struggling in water. At what angle of slight should the pilot release a rescu...
Time of flight(T)=(2H/g)
Range(R)=u*T
R=430*1000/3600*(2*1200/9.8)
R=1869.21m
Now,
tan(theta)=H/R=0.64
Theta=32.62