using trig functions in vb.net

[vb.netlearner]

Hi every 1

Im building a maths program, to work out trig functions using sine, tan and opp. I made up one question asking the user to find the length of the opp side. The Hyp side has got 9cm(HYP) and the angle is 40 degrees and u need to find the size of X(OPP). I have dont the quesiton on pen and paper using a calculator and it works out to be 5.79cm.

When i do it vb.net it comes out as 54.7. This is the code im using to work it out using vb.net maths operators:

Public Function RatioSineFindingLength(ByVal length As Double, ByVal angle As Double) As Double
Dim lengthReturn As Double
lengthReturn = (length / (Sin(angle)))
Return lengthReturn
End Function

ANY HELP WOULD BE GREAT.

[jemidiah]

sine = opp / hyp -> opp = sine*hyp; your formula appears to be slightly messed up. I also wouldn't be surprised if there's a radian/degree conversion error--your calculator probably uses degrees while VB tends to use radians.

There are 2*pi radians in 360 degrees. Radians end up being much more natural than degrees. Hope something here helps.

[vb.netlearner]

ok thanks m8