asin , acos, atan, asinh, acosh

a 는 해당 함수의 역함수를 의미한다

asin

Header:

#include <boost/math/complex/asin.hpp>

Synopsis:

template<class T>
std::complex<T> asin(const std::complex<T>& z);

Effects: returns the inverse sine of the complex number z.

Formula: 

acos

Header:

#include <boost/math/complex/acos.hpp>

Synopsis:

template<class T>
std::complex<T> acos(const std::complex<T>& z);

Effects: returns the inverse cosine of the complex number z.

Formula: 

atan

Header:

#include <boost/math/complex/atan.hpp>

Synopsis:

template<class T>
std::complex<T> atan(const std::complex<T>& z);

Effects: returns the inverse tangent of the complex number z.

Formula: 

asinh

Header:

#include <boost/math/complex/asinh.hpp>

Synopsis:

template<class T>
std::complex<T> asinh(const std::complex<T>& z);

Effects: returns the inverse hyperbolic sine of the complex number z.

Formula: 

acosh

Header:

#include <boost/math/complex/acosh.hpp>

Synopsis:

template<class T>
std::complex<T> acosh(const std::complex<T>& z);

Effects: returns the inverse hyperbolic cosine of the complex number z.

Formula: 

ref : https://www.boost.org/doc/libs/1_67_0/libs/math/doc/html/inverse_complex.html