php.js/sin.js

Use phpjs functions as required.

module.exports=function(){ return sin.apply(exports,arguments) };

function sin(arg) {
  //  discuss at: http://phpjs.org/functions/sin/
  // original by: Onno Marsman
  //   example 1: sin(8723321.4);
  //   returns 1: -0.9834330348825929

  return Math.sin(arg);
}