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Trigonometry - Formulas
Formulas for Calculations

All About Circuits	Trigonometric Equivalencies
Cuthbert Nyack	Trigonometric Relations
Dave Joyce	Summary of Trigonometric Identities
KryssTal	Trigonometric Equations
Math Forum	Trigonometry Formulas
Math.com	Trigonometric Identities
NAME Project	Small Angles
NAME Project	Trigonometric Ratios for Accute Angles
NAME Project	Trigonometric Identities
Project A Level	Pythagorean Identities

Formulas for Compound, Half, and Double Angles

NAME Project	Compound Angles and Calculations
NAME Project	Double Angle Formulae
NAME Project	Half Angle Formulae
Project A Level	Compound Angle Formulae

Law of Sines

Dan's Math	Solving General Triangles, Law of Sines and Cosines
Dave Joyce	Laws of Cosines and Sines
GCSE BiteSize Revision	Sine Rule
NAME Project	Sine Rule
Project A Level	Sine and Cosine Formulae
Wolfram Research	Law of Sines

Law of Cosines

Alan Selby	The Cosine Law
Dan's Math	Solving General Triangles, Law of Sines and Cosines
Dave Joyce	Laws of Cosines and Sines
GCSE BiteSize Revision	Cosine Rule
NAME Project	Cosine Rule
Project A Level	Sine and Cosine Formulae

Area of a Triangle

Dave Joyce	Area of a Triangle
GCSE BiteSize Revision	Area of a Triangle
Project A Level	Sine and Cosine Formulae

Other Specific Topics

Integrated Publishing	Distance from a Point to a Line
Math.com	Trigonometric Tables

Interactive Demonstrations

Math Education and Technology	Law of Sines
University of Vienna	Triangle and Law of Sines

Online Practice

Algebra Lab	Basic Trig Identities
GCSE BiteSize Revision	Sine and Cosine Rules and Area of a Triangle TestBite

Copyright 2004 by Brad Jolly
Page last updated: January 1, 2005