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[" Jf "P" and "theta" are the legths of ...

[" Jf "P" and "theta" are the legths of poipendicular form the "],[" orgin to the lines "x cos theta" .- y sin "theta=1x cos^(2)theta" .and "],[" Wreet "+y cos x theta=k" ,"k" ,rathectively,phove that "],[p^(2)+O4q^(2)=k^(2)" ."]

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If p and q are the lengths of perpendiculars from the origin to the lines x cos theta - y sin theta = k cos 2 theta " and " x sec theta + y cosec theta = k , respectively, prove that p^(2) + 4q^(2) = k^(2) .

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