The solution of the equation $\sec \theta - {\rm{cosec}}\theta = \frac{4}{3}$ is

  • A

    $\frac{1}{2}[n\pi + {( - 1)^n}{\sin ^{ - 1}}(3/4)]$

  • B

    $n\pi + {( - 1)^n}{\sin ^{ - 1}}(3/4)$

  • C

    $\frac{{n\pi }}{2} + {( - 1)^n}{\sin ^{ - 1}}(3/4)$

  • D

    None of these

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