Mathematics: Analysis and Approaches · Topic 3: Geometry and trigonometry
AHL3.9 — Reciprocal and inverse trigonometric functions
Mathematics: Analysis and Approaches · SL / HL · syllabus-mapped notes
Reciprocal trigonometric ratios
Define and use secant, cosecant and cotangent as reciprocals of cosine, sine and tangent.
Pythagorean identities
Derive and apply the two identities that follow from dividing the fundamental identity.
Inverse trigonometric functions
The functions arcsin, arccos and arctan: their restricted domains, ranges and graphs.