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Line 6:
Line 6: − + − + − *cot(iz)=-icothz&coth(iz)=-icot z
→Description
*It's also called as Circular function.
*It's also called as Circular function.
*COTH is the reciprocal of TANH function.
*COTH is the reciprocal of TANH function.
*<math>COTH(z)=\frac{Cosh(z)}{Sinh(z)}</math> i.e <math>\frac {e^z+e^{-z}} {e^z-e^{-z}}</math> or Icot(iz).where 'I' is the imginary unit and i=sqrt(-1).
*<math>COTH(z)=\frac{Cosh(z)}{Sinh(z)}</math> i.e <math>\frac {e^z+e^{-z}} {e^z-e^{-z}}</math> or ICOT(iz).where 'I' is the imaginary unit and <math>i=\sqrt{-1}</math>.
*Also relation between Hyperbolic & Trignometric function is
*Also relation between Hyperbolic & Trignometric function is <math>Cot(iz)=-iCoth(z)</math> & <math>Coth(iz)=-iCot(z)</math>
== Examples ==
== Examples ==