Question

At what other angle of elevation, the range of a shell fired from a gun will be same as that for an angle of elevation 5pi/36?

Answer 1

Answer:

Explanation:

As per the question,

=> The range of a shell fired from a gun will be same as that for an angle of elevation, θ = 5π/36

=> A hill just blocked the trajectory, the shell should be fired to hit the target is at an angle of π/2 - Ө

=> Thus, π/2 - 5π/36

= π*18/2*18 - 5π/36

= 18π- 5π/36

= 13π/36 rad

Hence,  shell should be fired at an angle of elevation of  13π/36 rad.