ax+b(sec(tan^(-1)x))=c and ay+b(sec(tan^...

`ax+b(sec(tan^(-1)x))=c and ay+b(sec(tan^(-1)y))=c`
The value of xy is

`(2ab)/(a^(2)-b^(2))`

`(c^(2)-b^(2))/(a^(2)-b^(2))`

`(c^(2)-b^(2))/(a^(2)+b^(2))`

none of these

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The correct Answer is:

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ax+b(sec(tan^(-1)x))=c and ay+b(sec(tan^(-1)y))=c The value of x+y is

`(2ac)/(a^(2)-b^(2))`

`(c^(2)-b^(2))/(a^(2)-b^(2))`

`(c^(2)-b^(2))/(a^(2)+b^(2))`

None of these

`(2ac)/(a^(2)-b^(2))`

`(c^(2)-b^(2))/(a^(2)-b^(2))`

`(c^(2)-b^(2))/(a^(2)+b^(2))`

none of these

`(2ab)/(a^(2)-c^(2))`

`(2ac)/(a^(2)-c^(2))`

`(c^(2)-b^(2))/(a^(2)+b^(2))`

none of these