acos
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constexpr Complex acos(const Complex &z) noexcept
Returns the complex inverse cos [1] of a complex number \(z\).
Parameters
Returns
- type Complex
A complex number.
The inverse cosine function of a complex number is defined as:
\[\cos^{-1}z = \frac{1}{2}\pi + i \log(iz + \sqrt{1 - z^2})\]
Example
Complex z = 3 + 4_j;
std::cout << acos(z) << "\n";
Output:
0.936812 - 2.30551j
References