A Simple Rule for Certain Trigonometric Identities
نویسندگان
چکیده
منابع مشابه
List of trigonometric identities
Cosines and sines around the unit circle In mathematics, 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. They are distinct from triangle identities, which are identities involving both angles and side lengths of a tri...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1913
ISSN: 0036-8733
DOI: 10.1038/scientificamerican05171913-315bsupp