Hard
Question
It was calculated that a shell when fired from a gun with a certain velocity and at an angle of elevation 
rad should strike a given target in the same horizontal plane. In actual practice, it was found that a hill just prevented the trajectory. At what angle of elevation should the gun be fired to hit the target.
rad should strike a given target in the same horizontal plane. In actual practice, it was found that a hill just prevented the trajectory. At what angle of elevation should the gun be fired to hit the target.Options
A. rad
radB.
rad
radC.
rad
radD.
rad
radSolution
θ1 = 
Another angle for same range is the complementary angle θ2
Then θ2 =
= 
⇒ θ2 = 
π ″D″ Ans.
Another angle for same range is the complementary angle θ2
Then θ2 =
= ⇒ θ2 = π ″D″ Ans.Create a free account to view solution
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