railway RRB NTPC Mock Test Series 2024-25 (CBT 1 + CBT 2) Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
What is the value of expression \(\frac{{\left( {{{\sin }^8}x - {{\cos }^8}x} \right)}}{{\left( {1 - 2{{\cos }^2}x} \right)\left( {{{\sec }^2}x - 2{{\sin }^2}x} \right)}}\)?
1
sin2x
2
cos2x
3
1
4
sec2x