std::cos

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Defined in header <cmath>
float       cos( float arg );
double      cos( double arg );
long double cos( long double arg );

Computes cosine of arg

[edit] Parameters

arg

-

floating point value representing angle in radians

[edit] Return value

cosine of arg in the range [-1.0 ; 1.0].

Domain error occurs if arg is infinite. NAN is returned in that case.

[edit] See also

sin	computes sine (sin(x)) (function)
tan	computes tangent (tan(x)) (function)
acos	computes arc cosine (arccos(x)) (function)