For the purposes of the PROMOTIC system, it is more usefull to use the method: Pm.Tan.
n = Tan(number)
|number||(Double) Angle in radians. The degrees can be transferred into radians by multiplying the input value by 0.017453293 (=2*Pi/360).|
Dim nAngle, nCosecant
nAngle = 1.3
nCosecant = 1 / Tan(nAngle)