railway DFCCIL Executive 2025 Mock Test Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
যদি sin θ > cos θ হয়, তাহলে \({ \sqrt{1-2\sin\theta \cos\theta} + \sqrt{1+2\sin\theta \cos\theta} \over 2\tan\theta}\) এর মান কত?
1
Cot θ
2
Sin θ
3
Cos θ
4
Tan θ