railway DFCCIL Executive 2025 Mock Test Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
The value of \(\frac{(\sin70^{\circ}-2\sin^370^{\circ})}{(2\cos^370^{\circ}-\cos70^{\circ})}\) is:
1
cot 70°
2
tan 70°
3
cosec 70°
4
sec 70°