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The angle which the velocity vector of a projectile, will make with the horizontal after time \( t \) of its being thrown with a velocity \( v \) at an angle \( \theta \) to the horizontal, is :
(1) \( \theta \)
(2) \( \tan ^{-1}\left(\frac{\theta}{t}\right) \)
(3) \( \tan ^{-1}\left(\frac{v \cos \theta}{v \sin \theta-g t}\right) \)
(4) \( \tan ^{-1}\left(\frac{v \sin \theta-g t}{v \cos \theta}\right) \)
\( \mathrm{P} \)
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