SSC SSC CHSL (Tier I & Tier II) Mock Test Series 2025 (New) Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
If a = sin θ + cos θ and b = sin θ - cos θ, then what is a(a - 1) + b(b - 1) equal to?
1
2sin θ
2
2(1 - cos θ)
3
2 cos θ
4
2(1 - sin θ)