Question
A ball is thrown at an angle $\theta$ with the horizontal. Its horizontal range is equal to its maximum height. This is possible only when the value of $\tan \theta$ is ..........

Answer

(a)

$\frac{H}{R}=\frac{1}{4} \tan \theta$

$\Rightarrow H=R$, given,

$\tan \theta=4$

$\Rightarrow \theta=\tan ^{-1}(4)$

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