' 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 Function' cosecant of an angleFunction Csc(radians As Double) As Double Csc = 1 / Sin(radians)End Function