A machine gun is mounted on the top of a tower \( 100 \mathrm{~m} \) high. At what angle should ...

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A machine gun is mounted on the top of a tower \( 100 \mathrm{~m} \) high. At what angle should the gun be inclined to cover a maximum range of firing on the ground below ? Themuzzle speed of the bullet is \( 150 \mathrm{~m} \mathrm{~s}^{-1} \).
Take \( g=10 \mathrm{~m} \mathrm{~s}^{-2} \).
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