SSC SSC Selection Post (Phase 13) 2025 Mock Test Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
The value of \(\left({ {1 - \cotθ} \over 1 - \tanθ}\right)^2\) - 1 when 0° < θ < 90°, (θ ≠ 0)is equal to:
1
cos2θ- 1
2
sec2 θ + 1
3
cot2 θ - 1
4
sin2 θ - 1