FredixBlog

Quertion: Hi!
How would you calculate the coordinate of a third point I have already two points, distances and angles from these points to the third point. I want to do triangulation and I don’t know which formula to apply.
Thanks
Hi!

Try the function below:

Global Const PI = 3.14159265358979

Public Function calRayonnement(Xa, Ya, DistanceAC, AngleInDegrees, OutputsXcOrNotXcAsResult As Boolean)
‘ Ray calculate next point coordinates from angle & distance.
‘ Xa , Xb are the coordinnates for starting point
‘ DistanceAC : Distance to measured point
‘ AngleInDegrees : as named
‘ OutputsXcOrNotXcAsResult = True, function will return Xc otherwise Yc, the coordinates of measures point

Dim Xc, Yc, glAB, lnV, lnH, lnD
Dim AngleInGradient

     AngleInGradient = AngleInDegrees / 180 * PI

     Xc = Xa + DistanceAC * Sin(AngleInGradient)
     Yc = Ya + DistanceAC * Cos(AngleInGradient)

     Debug.Print
     Debug.Print “Xc = ” & Xc
     Debug.Print “Yc = ” & Yc

     If OutputsXcOrNotXcAsResult Then calRayonnement = Xc Else calRayonnement = Yc

End Function

Output of these functions: