Question

The value of \(4\tan^{-1}(\frac{1}{5})-\frac{\pi}{4}=\)

• A. \(\tan^{-1}(\frac{1}{139})\)
• B. \(\tan^{-1}(\frac{1}{239})\)
• C. tan^-1(239)
• D. tan^-1(139)

Answer 1

The Correct Option is B

The correct option is (B) : \(\tan^{-1}(\frac{1}{239})\).