Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test 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