Complex::Acos Method (Complex)

.NET Framework (current version)

Returns the angle that is the arc cosine of the specified complex number.

Namespace: System.Numerics
Assembly: System.Numerics (in System.Numerics.dll)

Syntax

public:
static Complex Acos(
	Complex value
)

Parameters

value: Type: System.Numerics::Complex
A complex number that represents a cosine.

Return Value

Type: System.Numerics::Complex

The angle, measured in radians, which is the arc cosine of value.

Remarks

The Acos method for complex numbers corresponds to the Math::Acos method for real numbers.

The Acos method uses the following formula:

(-ImaginaryOne) * Log(value + ImaginaryOne*Sqrt(One - value * value)))

Examples

The following example illustrates the Acos method. It shows that passing the value returned by the Acos method to the Cos method returns the original Complex value.

C++

No code example is currently available or this language may not be supported.

Universal Windows Platform
Available since 8
.NET Framework
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 4.0
Windows Phone
Available since 8.1