Complex Trigonometric Functions

Function: gsl_complex gsl_complex_sin (gsl_complex z)

This function returns the complex sine of the complex number z, @math{\sin(z) = (\exp(iz) - \exp(-iz))/(2i)}.

Function: gsl_complex gsl_complex_cos (gsl_complex z)

This function returns the complex cosine of the complex number z, @math{\cos(z) = (\exp(iz) + \exp(-iz))/2}.

Function: gsl_complex gsl_complex_tan (gsl_complex z)

This function returns the complex tangent of the complex number z, @math{\tan(z) = \sin(z)/\cos(z)}.

Function: gsl_complex gsl_complex_sec (gsl_complex z)

This function returns the complex secant of the complex number z, @math{\sec(z) = 1/\cos(z)}.

Function: gsl_complex gsl_complex_csc (gsl_complex z)

This function returns the complex cosecant of the complex number z, @math{\csc(z) = 1/\sin(z)}.

Function: gsl_complex gsl_complex_cot (gsl_complex z)

This function returns the complex cotangent of the complex number z, @math{\cot(z) = 1/\tan(z)}.