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[" (C) "tan^(-1)(sqrt(3))],[" If a focal...

[" (C) "tan^(-1)(sqrt(3))],[" If a focal chord of "y^(2)=4x" makes an angle "alpha,alpha in(0,(pi)/(4))" with the positive direction of "x" -axis,"],[" minimum length of this focal chord is - "42" cosect "],[[" (A) "2sqrt(2)," (B) "4sqrt(2)," (C) "8," (D) "16]]

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