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The general solution of `8 tan^(2)""(x)/(2)=1+ sec x ` is
A. ` x = 2n pi pm cos^(-1)""((-1)/(3))`
B. `x= 2 n pi pm (pi)/(6)`
C. `x = 2 n pi pm cos^(-1)""((1)/(3)) `
D. None of these

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