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Acos Method

[This documentation is for preview only, and is subject to change in later releases. Blank topics are included as placeholders.]

Returns the angle whose cosine is the specified number.

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

Syntax

'Declaration
Public Shared Function Acos ( _
    d As Double _
) As Double

public static double Acos(
    double d
)

public:
static double Acos(
    double d
)

static member Acos : 
        d:float -> float 

public static function Acos(
    d : double
) : double

Parameters

  • d
    Type: System. . :: . .Double
    A number representing a cosine, where d must be greater than or equal to -1, but less than or equal to 1.

Return Value

Type: System. . :: . .Double
An angle, θ, measured in radians, such that 0 ≤θ≤π
-or-
NaN if d < -1 or d > 1 or d equals NaN.

Remarks

Multiply the return value by 180/Math..::..PI to convert from radians to degrees.

.NET Framework Security

See Also

Reference

Math Class

System Namespace