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Defined in header <math.h>
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<td >
float       tanf( float arg );
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double      tan( double arg );
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<td >
long double tanl( long double arg );
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<td class="t-dcl-nopad"> </td> <td > (since C99) </td> </tr> Template:ddcl list end

Computes tangent of arg

Parameters

arg - floating point value representing angle in radians

Return value

Tangent of arg.

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 cosTemplate:c/numeric/math/dcl list atan