railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Trigonometry Circular Measure of Angles
If \(tan40^0 = \alpha\) , then find \(\frac{tan320^0 - tan 310^0}{1 + tan320^0.tan 310^0}\).
1
\(\frac{1 - \alpha^2}{\alpha}\)
2
\(\frac{1 + \alpha^2}{2\alpha}\)
3
\(\frac{1 - \alpha^2}{2\alpha}\)
4
\(\frac{1 +\alpha^2}{\alpha}\)