The angle of projection at which the horizontal range and maximum height of projectile are equal...

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The angle of projection at which the horizontal range and maximum height of projectile are equal is
[Kurukshetra CEE 1996; Pb. PET 2001;
BCECE 2003; RPMT 2006; Odisha JEE 2011]
(a) \( 45^{\circ} \)
(b) \( \theta=\tan ^{-1}(0.25) \)
(c) \( \theta=\tan ^{-1} 4 \) or \( \left(\theta=76^{\circ}\right) \)
(d) \( 60^{\circ} \)
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