If a sin^(2)x+b cos^(2)x=c, b sin^(2)y+a...

If `a sin^(2)x+b cos^(2)x=c, b sin^(2)y+a cos^(2)y=d` and `atan x=btany` then the value of `((d-a)(c-a))/((b-c)(b-d))=`

`((b-c) (b-d)) /((a-d)(a-c))`

`((a-d)(c-a))/((b-c)(d-b))`

`((d-a)(c-a))/((b-c)(d-b))`

`((b-c)(b-d))/((c-a)(a-d))`

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