railway RRB Technician Grade 3 Mock Test 2024 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
যদি \(\frac{{\sin \theta }}{{\cos \theta }} + \frac{{\cos \theta }}{{\sin \theta }}\; = \;2\) এবং 0 < θ < 90° হয়, তবে θ -এর মান কত?
1
30°
2
45°
3
60°
4
75°