Trigonometry
Formulae
General trigonometric identities
Trigonometrical Ratios
Describes the derivation of the basic ratios and their relationship one with another
The Trigonometry of the Triangle
The sine and cos formula; areas of triangles and an analysis of the varios circles associated with Triangles
Trigonometrical Formulae
A collection of formulae covering, Addition and subtraction of Sin cos and tan; Product formulae ; the solution of equations and the half angle formulae and the Inverser Ratioi
