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If $P$ and $Q$ are the lengths of the perpendiculars from the origin to the lines $x \cos θ + y \sin θ = k \cos 2 θ$ and $x s e c θ - y \cos e c θ = k$ respectively then

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p2-4q2=k2

p2+4q2=k2

4p2+4q2=k2

p2+q=k2

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Correct option is B

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If P and Q are the lengths of the perpendiculars from the origin to the lines x cos θ + y sin θ = k cos 2 θ and x sec θ – y cosec θ = k respectively then

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If $P$ and $Q$ are the lengths of the perpendiculars from the origin to the lines $x \cos θ + y \sin θ = k \cos 2 θ$ and $x s e c θ - y \cos e c θ = k$ respectively then