The value of  \(\int {\frac{1}{{1 + \cos 8x}}dx} \)

1
\(\frac{{\tan 2x}}{8} + C\)
2
\(\frac{{\tan 8x}}{8} + C\)
3
\(\frac{{\tan 4x}}{4} + C\)
4
\(\frac{{\tan 4x}}{8} + C\)

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