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

The function sinh() returns the hyperbolic sine of arg.

C++ also provides the following overloaded forms:

    #include <cmath>
    float sinh( float arg ); // same as sinhf() in C99
    long double sinh( long double arg ); // same as sinhl() in C99

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