Function Reference

ASin

Calculates the arcsine of a number.

ASin ( expression )

Parameters

expression Any value between -1 and 1 (inclusive).

Return Value

Returns the trigonometric arcsine of the number. Result is in radians.

Remarks

ASin(x) is mathematically defined only for -1 < x < 1, so ASin() tends to return -1.#IND for other values of x.

ACos, ATan, Cos, Sin, Tan

Example

Example 1

#include <MsgBoxConstants.au3>
Example()
Func  Example()
; Assign a Local variable the arcSine of 0.5.
Local $fArcSin1= ASin (0.5)
; Display the result.
MsgBox ($MB_SYSTEMMODAL,"",$fArcSin1&" rad.")
; Assign a Local constant variable the approximate PI number.
Local Const $PI= 3.141592653589793
; Assign a Local variable the formula to switch from radian to degree (equals to one radian in degree).
Local $fRadToDeg= 180/ $PI
; Assign a Local variable a number in degree.
Local $fArcSin2= $fRadToDeg* ASin (1)
; Display the result.
MsgBox ($MB_SYSTEMMODAL,"",$fArcSin2&" deg.")
EndFunc ;==>Example

Example 2

; Example of using ASin with degrees
#include <Math.au3>
#include <MsgBoxConstants.au3>
Local $fDegree= _Degree (ASin (0.5))
MsgBox ($MB_SYSTEMMODAL,Default ,"ASin(0.5) = "&$fDegree&" degrees")