Calculate the hyperbolic cotangent of a number
npm install cothCalculate the hyperbolic cotangent of a number.
`` javascript
const coth = require('coth');
coth(Math.PI);
// => 1.0037418731973
`
` bash`
$ npm install coth
` javascript`
const coth = require('coth');
Given a _Number_ x, returns the hyperbolic cotangent of x as a _Number_.