SSC SSC CPO Mock Test Series 2025 (Tier I & II) (DP SI & CAPF) Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
If sin α = 1/2 and sin β = 1/2, then what is the value of cos (α + β)? (0 degree < α, β < 90 degree)
1
1/4
2
1
3
√3/2
4
1/2