Difference between revisions of "Yan Jung Trigonometric Laws"
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Revision as of 11:53, 25 July 2011
In mathematics, trigonmetric laws, or trigonometric identities are equalities that involve trigonometric functions and are true for every single value of the occurring variables. Geometrically, these are identities involving certain functions of one or more angles. These are distinct from triangle identities, which are identities involving both angles and side lengths of a triangle.