cos function

Complex<num, num> cos(Complex<num, num> complex)

Return the cosine of complex.

Implementation

Complex<num, num> cos(Complex complex) {
  var r = math.cos(complex.real) * _cosh(complex.imaginary);
  var i = math.sin(complex.real) * _sinh(complex.imaginary);
  return Complex<num, num>(r, i);
}