railway DFCCIL Executive 2025 Mock Test Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
If \(\sin (A + B) = \frac{\sqrt 3}{2} \ \text{and} \ \cos (A-B) = \frac{\sqrt 3}{2}\) then which of the following will be possible values of A and B?
1
A = 45°, B = 15°
2
A = 45°, B = 30°
3
A = 10°, B = 45°
4
A = 50°, B = 10°