The angle which the velocity vector of a projectile thrown with a velocity u at an angle $\mathrm{\theta }$ to the horizontal will make with the horizontal after time t of its being thrown up is

• A

  $\mathrm{\theta }$

• B

  ${\tan }^{-1}\left(\frac{\mathrm{\theta }}{\mathrm{t}}\right)$

• C

  ${\tan }^{-1}\left(\frac{\mathrm{v} \cos \mathrm{\theta }}{\mathrm{v} \sin \mathrm{\theta } -\mathrm{gt}}\right)$

• D

  ${\tan }^{-1}\left(\frac{\mathrm{v} \sin \mathrm{\theta } - \mathrm{gt}}{\mathrm{v} \cos \mathrm{\theta }}\right)$