1.

Chords of he hyperbolax^(2)//a^(2) -y^(2)//b^(2) =1 are at a constantdistance k from the centre . The equation to the locus of their poles is

Answer»

` (x^(2))/(a^(4)) +(y^(2))/(B^(4)) =(1)/(k^(2))`
` (x^(2))/(a^(4)) +(y^(2))/(b^(4)) =k^(2) `
` (x^(2))/(a^(4))+(y^(2))/(b^(4))=(1)/(L^(4))`
` (x^(2))/(a^(4))+(y^(2))/(b^(4)) = k^(4) `

Answer :A


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