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 Documentation / Mathematica / Built-in Functions / Mathematical Functions / Elementary Functions /
Cos
  • Cos[ z ] gives the cosine of z.
  • Mathematical function (see Section A.3.10).
  • The argument of Cos is assumed to be in radians. (Multiply by Degree to convert from degrees.)
  • See the Mathematica book: Section 1.1.3, Section 3.2.6.
  • See also: ArcCos, Sec, TrigToExp, TrigExpand.

    Further Examples

    You can compute exact values of trigonometric functions.

    In[1]:=

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    This is the derivative.

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    This is the indefinite integral.

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    This is a series expansion around .

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