circular functions

A comprehensive journey through trigonometry, from foundational definitions to inverse functions and beyond.

Definitions

Foundational definitions for circular functions and trigonometry.

Equations

Systematic approaches to solving trigonometric equations.

Graphs

Exploring transformations and properties of circular function graphs.

Identities

Building fluency with fundamental trigonometric relationships.

Reciprocal Functions

Exploring the reciprocal trigonometric functions.

Compound Angle Formulae

Discover the compound angle identities through geometric reasoning.

Transformations

Understanding function transformations systematically.

Differentials

Understanding differentials and their applications in calculus.

Integration

Developing insight into integration methods and strategies.

Inverse Functions — Definitions

Introducing arcsin, arccos, and arctan — careful definitions using graphs, with domains and ranges.

Inverse Functions — Composition

Identities and compositions of inverse circular functions, including sum formulas for arcsin, arccos, and arctan.

Inverse Functions — Differentials

Derivatives of arcsin, arccos, and arctan, with applications to integration.

Inverse Functions — Integrals

Integrals of arcsin, arccos, and arctan using geometric area arguments and integration by parts.

Inverse Functions — Extension

Graphs, domains, ranges, and derivatives of arcsec, arccosec, and arccot, together with compositions and identities involving these functions.

© 2026 Dr Brian Brooks. All rights reserved.

Cambridge mathematician. Cornell musicologist. Educator.