Was this page helpful?
Your feedback about this content is important. Let us know what you think.
Additional feedback?
1500 characters remaining
Asin Method

Math.Asin Method

Returns the angle whose sine is the specified number.

Namespace:  System
Assemblies:   mscorlib (in mscorlib.dll)
  System.Runtime.Extensions (in System.Runtime.Extensions.dll)

static member Asin : 
        d:float -> float

Parameters

d
Type: System.Double

A number representing a sine, 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 -π/2 θ π/2
-or-
NaN if d < -1 or d > 1 or d equals NaN.

A positive return value represents a counterclockwise angle from the x-axis; a negative return value represents a clockwise angle.

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

The following example uses Asin to assist in the computation of the inner angles of a given trapezoid.

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

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8

Portable Class Library

Supported in: Portable Class Library
Show:
© 2015 Microsoft