Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Mathematics Trigonometry Inverse Trigonometric Functions
sin\(\rm(tan^{-1}\frac{4}{5}+tan^{-1}\frac{4}{3}+tan^{-1}\frac{1}{9}-tan^{-1}\frac{1}{7})=\)
1
\(\frac{1}{2}\)
2
\(\frac{1}{\sqrt2}\)
3
\(\frac{\sqrt3}{2}\)
4
More than one of the above.
5
None of the above