1.

The value of \({\rm{tan}}\left( {2{{\tan }^{ - 1}}\frac{1}{5} - \frac{\pi }{4}} \right)\) is

A. \(- \frac{7}{{17}}\)
B. \(\frac{5}{{16}}\)
C. \(\frac{5}{4}\)
D. \(\frac{7}{{17}}\)
Answer» B. \(\frac{5}{{16}}\)


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