Question
Two projectiles $A$ and $B$ are thrown with the same speed such that $A$ makes angle $\theta$ with the horizontal and $B$ makes angle $\theta$ with the vertical, then
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Answer
Depending on the value of $\theta$ one can have same or different time of flight, range o maximum height. Therefore must statement is wrong. They may be equal or may not be. This is only possible for $\theta=45^{\circ}$
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