// Asin returns the inverse sine of x. func Asin(x complex128) complex128 { … } // Asinh returns the inverse hyperbolic sine of x. func Asinh(x complex128) complex128 { … } // Acos returns the inverse cosine of x. func Acos(x complex128) complex128 { … } // Acosh returns the inverse hyperbolic cosine of x. func Acosh(x complex128) complex128 { … } // Atan returns the inverse tangent of x. func Atan(x complex128) complex128 { … } // Atanh returns the inverse hyperbolic tangent of x. func Atanh(x complex128) complex128 { … }