defence exam Coast Guard Navik GD (General Duty) 02/2025 Mock Test Series Mathematics Trigonometry Inverse Trigonometric Functions
The value of \(\cot \left(\sum_{n=1}^{23} \cot ^{-1}\left(1+\sum_{k=1}^{n} 2 k\right)\right)\) is
1
\(\frac{23}{25}\)
2
\(\frac{25}{23}\)
3
\(\frac{23}{24}\)
4
\(\frac{24}{23}\)