tan [C++ Reference]
Keywords: c,math,tan
Date: 2009-03-19T23:40:32-0700

## tan

Syntax:

        #include <cmath>
        double tan( double arg );

The tan() function returns the tangent of arg, where arg is given in radians. If arg is infinite, tan() will return NAN and raise a floating-point exception.

C++ also provides the following overloaded forms:

        #include <cmath>
        float tan( float arg ); // same as tanf() in C99
        long double tan( long double arg ); // same as tanl() in C99

Related Topics: acos, asin, atan, atan2, cos, cosh, sin, sinh, tanh