double cos(double x)
Trigonometric cosine function.
complex cpack(double x, double y)
Pack two real numbers into a complex number.
double cimag(complex z)
Imaginary part of complex number.
double creal(complex z)
Real part of complex number.
double sinh(double x)
Hyperbolic sine function.
complex ccsc(complex z)
Cosecant of a complex number.
double cosh(double x)
Hyperbolic cosine function.
double sin(double x)
Trigonometric sine function.