Physics Two Dimensional Motion Question 238

Question: Referring to above question, the angle with the horizontal at which the projectile was projected is

Options:

A) $ {{\tan }^{-1}}(3/4 $ ) B) $ {{\tan }^{-1}}(4/3) $ C) $ {{\sin }^{-1}}(3/4 $ ) D) Not obtainable from the given data

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Answer:

Correct Answer: B

Solution:

[b] The angle of projection is given by $ \theta ={{\tan }^{-1}}( \frac{v _{y}}{v _{x}} )={{\tan }^{-1}}( \frac{4}{3} ) $