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x = npi - tan^-1 3 is a solution of the ...

`x = npi - tan^-1 3` is a solution of the equation `12 tan 2x + sqrt10/cosx + 1 = 0` if

A

n is any integer

B

n is an even integer

C

n is a positive integer

D

n is an odd integer

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The correct Answer is:
D
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