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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....
do you have to know the arc of an angle, where sin is given?
maybe this can be of use :
A circle does have 2*PI radians, which is equal to 360°, so
1° = 2 PI / 360
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)
Thank you for your answer, I'll let you know with my test.
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.
Yes, you are right,
Originally Posted by howey
here is a function
I tested it and gives reasonable results
Function ArcSin(Num As Double) As Double
If Abs(Num) <> 1 Then
ArcSin = Atn(Num / Sqr(Abs(1 - Num ^ 2)))
ArcSin = 0