Moderate -0.3 This question requires knowing the double angle formula cos(2x) = 2cos²(x) - 1, then simplifying the integrand to 2 - sec²(x), which integrates to standard forms. While it involves multiple steps (identity substitution, simplification, integration, evaluation), each step is routine for C4 level. The main challenge is recognizing which identity to use, but this is explicitly prompted. Slightly easier than average due to the guided approach and standard techniques.