Results 1 to 6 of 6

Thread: Arc Sin

  1. #1
    Join Date
    Oct 2003
    Location
    Ger
    Posts
    1,969
    Provided Answers: 1

    Lightbulb Unanswered: Arc Sin

    Does anyone know how to compute the Arc sin of a given sin of an angle?
    Acce$$ doesn't have Arc Sin it has only atn Arc Tan....
    Thanks

  2. #2
    Join Date
    Mar 2004
    Location
    belgium
    Posts
    290
    do you have to know the arc of an angle, where sin is given?

  3. #3
    Join Date
    Mar 2004
    Location
    belgium
    Posts
    290
    maybe this can be of use :

    A circle does have 2*PI radians, which is equal to 360°, so

    1° = 2 PI / 360

    and

    0.25*PI = 45°
    0.50*PI = 90°
    0.75*PI = 135°
    1*PI = 180°

    Arc also called radian

    so if given sin is known then also the degrees are known, in which case you can multiply the degrees with (2PI/360)

  4. #4
    Join Date
    Oct 2003
    Location
    Ger
    Posts
    1,969
    Provided Answers: 1
    Thank you for your answer, I'll let you know with my test.

  5. #5
    Join Date
    Jul 2004
    Location
    Southampton, UK
    Posts
    368
    It seems you are supposed to derive it. Access he give the formula as:

    Arcsin(X) = Atn(X / Sqr(-X * X + 1))

    Look in help under "derived functions" if you need any others.
    hth
    Chris

  6. #6
    Join Date
    Oct 2003
    Location
    Ger
    Posts
    1,969
    Provided Answers: 1
    Quote Originally Posted by howey
    It seems you are supposed to derive it. Access he give the formula as:

    Arcsin(X) = Atn(X / Sqr(-X * X + 1))

    Look in help under "derived functions" if you need any others.
    hth
    Chris
    Yes, you are right,
    here is a function
    PHP Code:
    Function ArcSin(Num As Double) As Double
      
    If Abs(Num) <> 1 Then   
        ArcSin 
    Atn(Num Sqr(Abs(Num 2)))
      Else
        
    ArcSin 0
      End 
    If
    End Function 
    I tested it and gives reasonable results
    Thanks agian

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •