SSC SSC Selection Post (Phase 13) 2025 Mock Test Quantitative Aptitude Trigonometry Circular Measure of Angles
Let PQR be a right angled triangle, right-angled at R. Let PQ = 29 cm, QR = 21 cm and ∠Q = θ. Find the value of cos2 θ – sin2 θ.
1
\(\frac{41}{841}\)
2
\(\frac{841}{41}\)
3
\(\frac{840}{40}\)
4
\(\frac{40}{840}\)