engineering recuitment NFC Chemical Plant Operator Mock Test Mathematics Trigonometry Trigonometric Identities
For which θ value \(\dfrac{\cos \theta}{1-\sin \theta}+ \dfrac{\cos \theta}{1+ \sin \theta}=4 \ ?\)
1
\(\dfrac{\pi}{2}\)
2
\(\dfrac{\pi}{3}\)
3
\(\dfrac{\pi}{4}\)
4
\(\dfrac{\pi}{6}\)