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A particle is projected from ground at an angle \( \theta \) with horizontal with speed \( u \). The ratio of radius of
P curvature of its trajectory at point of projection to

W radius of curvature at maximum height is
(1) \( \frac{1}{\sin ^{2} \theta \cos \theta} \)
(2) \( \cos ^{2} \theta \)
(3) \( \frac{1}{\sin ^{3} \theta} \)
(4) \( \frac{1}{\cos ^{3} \theta} \)
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