World Web Math: Useful Trigonometric Identites
Useful Trigonometric Identities
This page is meant to be used as reference listing of useful
trigonometric identities. No discussion of the proofs or the
consequences of these identities will be give here.
Addition Formulas
Subtraction formulas
Double Angle Formulas
Half-Angle Formulas
Product Formulas
Factoring Formulas
The following two formulas are of only limited use:
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Last modified August 1, 1998