Angle of intersection of the curve \( x^{2}=32 y \) and \( y^{2}=4 x \) at the point \( (16,8) \...

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Angle of intersection of the curve \( x^{2}=32 y \) and \( y^{2}=4 x \) at the point \( (16,8) \) is
(a) \( 60^{\circ} \)
(b) \( 90^{\circ} \)
(c) \( \tan ^{-1}(4 / 3) \)
(d) \( \tan ^{-1}(3 / 5) \)
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