std::cos

Defined in header <cmath>
float       cos( float arg );
double      cos( double arg );
long double cos( long double arg );
double      cos( Integral arg );		(since C++11)

Computes cosine of arg

Parameters

arg

-

floating point value representing angle in radians

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.

See also

sin	computes sine (sin(x)) (function)
tan	computes tangent (tan(x)) (function)
acos	computes arc cosine (arccos(x)) (function)
cos(std::complex)	computes cosine of a complex number (cos(z)) (function template)
cos(std::valarray)	applies the function std::cos to each element of valarray (function template)