Find that the product of distance from the points (+-√a2-b2,0)to the line x/a cos∆+y/B sin∆=1

Find that the product of distance from the points (+-√a2-b2,0)to the

1.	Find that the product of distance from the points (+-√a2-b2,0)to the line x/a cos∆+y/B sin∆=1
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