railway DFCCIL Executive 2025 Mock Test Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
The value of (sin A + cosec A)2 + (cos A + sec A)2 is:
1
5 - cosec2 A + sec2 A
2
5 + sec A + cosec A
3
5 + cosec2 A + sec2 A
4
5 + cosec2 A - sec2 A