railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
যদি cos θ - sin θ = 0 হয়, তাহলে (sin8 θ + cos8 θ) এর মান হবে:
1
\(\frac{1}{8}\)
2
\(\frac{1}{4}\)
3
\(\frac{1}{6}\)
4
\(\frac{1}{2}\)