Math.Acosh(Double) Method

Definition

Namespace:

System

Assembly:

System.Runtime.dll

Source:

Math.cs

Returns the angle whose hyperbolic cosine is the specified number.

public:
 static double Acosh(double d);

public static double Acosh (double d);

static member Acosh : double -> double

Public Shared Function Acosh (d As Double) As Double

Parameters

d

Double

A number representing a hyperbolic cosine, where d must be greater than or equal to 1, but less than or equal to PositiveInfinity.

Returns

Double

An angle, θ, measured in radians, such that 0 ≤ θ ≤ ∞.

-or-

NaN if d < 1 or d equals NaN.

Remarks

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

This method calls into the underlying C runtime, and the exact result or valid input range may differ between different operating systems or architectures.