List of trigonometric identities

Cosines and sines around the unit circle

All of the trigonometric functions of an angle θ can be constructed geometrically in terms of a unit circle centered at O. Many of these terms are no longer in common use.

Illustration of angle addition formulae for the sine and cosine. Emphasized segment is of unit length.

In mathematics, trigonometric identities are equalities that involve trigonometric functions and are true for every single value of the occurring variables where both sides of the equality are defined. Geometrically, these are identities involving certain functions of one or more angles. They are distinct from triangle identities, which are identities potentially involving angles but also involving side lengths or other lengths of a triangle.

单词	Trigonometric Identities
释义	Trigonometric Identities 英语百科 List of trigonometric identities In mathematics, trigonometric identities are equalities that involve trigonometric functions and are true for every single value of the occurring variables where both sides of the equality are defined. Geometrically, these are identities involving certain functions of one or more angles. They are distinct from triangle identities, which are identities potentially involving angles but also involving side lengths or other lengths of a triangle.
随便看	Kakur的意思 Kakure Kirishitan的意思 Kakuri的意思 Kakuro的意思 kakuros的意思 Kakuse的意思 Kakushkin sign的意思 Kakus, Sungai的意思 Kakutani的意思 Kakutani theorem的意思 kakuzo的意思 Kakwa R.的意思 Kakwata的意思 Kakya的意思 Kaké的意思 Kakūn的意思 kal的意思 kal.的意思 Kala的意思 Kalaa Djerda的意思 Kalaa el Khasba的意思 Kalaa Kebira的意思 Kalaallisut的意思 Kalaallit的意思 Kalaallit Nunaat的意思

Trigonometric Identities

List of trigonometric identities