1.

Ifx=h+asecthetaandy= k + b "cosec" thetathen

Answer»

` (a^2 ) /((x +H)^2) - (B^2 )/((y +K)^2 ) =1`
`(a^2 )/((x-h)^2)+(b^2)/( (y-k)^2) =1`
`((x-h)^2)/( a^2)+( (y-k)^2)/(b^2) =1`
`((x-h)^2 )/(a^2 )-((y -k)^2)/(b^2)=1`

Answer :B


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