Cos

The cosine of x, in radians.

WikipediaSine and cosine↗MathWorldCosine↗WikidataQ13647261↗DLMF4.14.E2↗FungrimCos✓↗Fungrim entryWolfram LanguageCos✓↗

Cos(x)the cosine of x, in radians.

SageMathcos(x)↗SymPycos(x)↗mpmathcos(x)↗

Domain: Elementary functions

Details

• Even function: .
• Period .
• Reciprocal of Sec: .
• Co-function with Sin: .

Examples

See also: Sin, Tan, Sec, Arccos