A Level Pure Year 2, Chapter 6 · exam-style questions with mark schemes · secant, cosecant and cotangent and their graphs, simplifying, proving and solving with them, the identities 1 + tan²θ ≡ sec²θ and 1 + cot²θ ≡ cosec²θ, and the inverse functions arcsin, arccos and arctan with their domains, ranges and graphs