engineering recuitment NCRTC Station Controller Mock Test 2021 Mathematics Trigonometry Inverse Trigonometric Functions
\(\tan^{-1}{3\over4} + 2\cot^{-1}{1\over3} = \) का मान ज्ञात कीजिए।
1
\(\pi\over2\)
2
π
3
\(\tan^{-1}{5\over6}\)
4
\(\cot^{-1}{5\over6}\)