If the time of flight of a bullet over a horizontal range $R$ is $T\, seconds$, the inclination of the direction of projection to the horizontal is

  • A

    ${\sin ^{ - 1}}\,\left( {\frac{{g{T^2}}}{R}} \right)$

  • B

    ${\tan ^{ - 1}}\,\left( {\frac{{g{T^2}}}{{2R}}} \right)$

  • C

    ${\cos ^{ - 1}}\,\left( {\frac{{2g{T^2}}}{{2R}}} \right)$

  • D

    ${\cot ^{ - 1}}\,\left( {\frac{R}{{g{T^2}}}} \right)$

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