# It was calculated that a shell when fired from a gun with a certain velocity and at an angle of elevation 5π 36 rad should strike a given target. In actual practice, it was found that a hill just prevented the trajectory. At what angle of elevation should the gun be to hit the target?

Question: It was calculated that a shell when fired from a gun with a certain velocity and at an angle of elevation 5π 36 rad should strike a given target. In actual practice, it was found that a hill just prevented the trajectory. At what angle of elevation should the gun be to hit the target?

(A) $\dfrac{5\pi }{36}rad$

(B) $]\dfrac{11\pi }{36}rad$

(C) $]\dfrac{7\pi }{36}rad$

(D) $]\dfrac{13\pi }{36}rad$

Solution:

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