engineering recuitment HPCL Junior Executive 2025 Mock Test Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
\(\frac{{\cos x}}{{1 + \sin x}} + \frac{{1 + \sin x}}{{\cos x}}\;\)किसके बराबर है?
1
2cos x
2
2sin x
3
2sec x
4
2cosec x