Microsoft® Visual Basic® Scripting Edition Derived Math Functions 
 Language Reference 

The following is a list of nonintrinsic math functions that can be derived from the intrinsic math functions:
Function Derived equivalents Secant Sec(X) = 1 / Cos(X) Cosecant Cosec(X) = 1 / Sin(X) Cotangent Cotan(X) = 1 / Tan(X) Inverse Sine Arcsin(X) = Atn(X / Sqr(X * X + 1)) Inverse Cosine Arccos(X) = Atn(X / Sqr(X * X + 1)) + 2 * Atn(1) Inverse Secant Arcsec(X) = Atn(X / Sqr(X * X  1)) + Sgn((X) 1) * (2 * Atn(1)) Inverse Cosecant Arccosec(X) = Atn(X / Sqr(X * X  1)) + (Sgn(X)  1) * (2 * Atn(1)) Inverse Cotangent Arccotan(X) = Atn(X) + 2 * Atn(1) Hyperbolic Sine HSin(X) = (Exp(X)  Exp(X)) / 2 Hyperbolic Cosine HCos(X) = (Exp(X) + Exp(X)) / 2 Hyperbolic Tangent HTan(X) = (Exp(X)  Exp(X)) / (Exp(X) + Exp(X)) Hyperbolic Secant HSec(X) = 2 / (Exp(X) + Exp(X)) Hyperbolic Cosecant HCosec(X) = 2 / (Exp(X)  Exp(X)) Hyperbolic Cotangent HCotan(X) = (Exp(X) + Exp(X)) / (Exp(X)  Exp(X)) Inverse Hyperbolic Sine HArcsin(X) = Log(X + Sqr(X * X + 1)) Inverse Hyperbolic Cosine HArccos(X) = Log(X + Sqr(X * X  1)) Inverse Hyperbolic Tangent HArctan(X) = Log((1 + X) / (1  X)) / 2 Inverse Hyperbolic Secant HArcsec(X) = Log((Sqr(X * X + 1) + 1) / X) Inverse Hyperbolic Cosecant HArccosec(X) = Log((Sgn(X) * Sqr(X * X + 1) +1) / X) Inverse Hyperbolic Cotangent HArccotan(X) = Log((X + 1) / (X  1)) / 2 Logarithm to base N LogN(X) = Log(X) / Log(N)
See also:
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