defence exam SSB Head Constable (Communication) 2023 Mock Test Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
If cos (A – B) = \(\frac{{\sqrt 3 }}{2}\), and cos (A + B) = 0, where A and B are positive acute angles and A \( \ge \) B, then the measures of A and B are:
1
80o and 10o
2
60o and 30o
3
70o and 20o
4
50o and 40o