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December 25, 1999

Cot, Sec, Csc – Missing trig functions

‘ Cotangent of an angleFunction Cot(radians As Double) As Double Cot = 1 / Tan(radians)End Function’ Secant of an angleFunction Sec(radians As Double) As Double Sec = 1 / Cos(radians)End

Atn2 – Arc tangent of Y/X

‘ arc tangent of Y/X – returns values in all four quadrantsFunction Atn2(x As Double, y As Double) As Double If x = 0 Then Atn2 = Sgn(y) * 1.5707963267949