for now, included in [[Pre-Calculus]] but will sort later [[Definition of the Circular Trigonometric Functions]] [[Sine Function]] [[Cosine Function]] [[Tangent Function]] [[Cosecant Function]] [[Secant Function]] [[Cotangent Function]] [[Arcsine Function]] [[Arccosine Function]] [[Arctangent Function]] [[Arccosecant Function]] [[Arcsecant Function]] [[Arccotangent Function]] [[Trigonometric Identities]]