1.

P is a point onx^(2)//a^(2) -y^(2)//b^(2) =1andA_2 A' are the vertices of the conic .If PA ,PA' meet an asymptotes at K and L then(KL)^(2)

Answer»

`2A^(2) `
`2B^(2) `
`a^(2) -B^(2)`
`a^(2)+b^(2) `

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