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Defined in header <math.h>
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float       cosf( float arg );
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double      cos( double arg );
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long double cosl( long double arg );
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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

Template:c/numeric/math/dcl list sinTemplate:c/numeric/math/dcl list tanTemplate:c/numeric/math/dcl list acos