Find all number x , y that satisfy the ...

Find all number x , y that satisfy the equation `(sin^2 x +(1)/( sin^(2) x))^(2)+( cos^(2)x+(1)/(cos^(2)x))^(2)=12+(1)/(2) siny. `

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The correct Answer is:

`x=(2m+1)(pi)/(4) and y=2n pi +(pi)/(2) , n in I `

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