- where z is any real number
- This function gives the hyperbolic Cotangent of 'z'.
- It's also called as Circular function.
- COTH is the reciprocal of TANH function.
- i.e or ICOT(iz).where 'I' is the imaginary unit and .
- Also relation between Hyperbolic & Trignometric function is &
- z is any real number.