Mathematics Trigonometry Inverse Trigonometric Functions

\(\tan \left\{2 \tan^{-1} \frac 1 5 - \frac \pi 4 \right\}= \;?\)

1
\(\frac {-17}{7}\)
2
\(\frac {17}{7}\)
3
\(\frac {-7}{17}\)
4
More than one of the above
5
None of the above

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