src/math_function.js
function (x) {
    return (Mexp.math.isDegree ? 180 / Math.PI * Math.acos(x) : Math.acos(x))
  }
function (x) {
    return (Mexp.math.isDegree ? 180 / Math.PI * Math.acos(x) : Math.acos(x))
  }
function ( x ) { return ( Mexp . math . isDegree ? 180 / Math . PI * Math . acos ( x ) : Math . acos ( x ) ) }
mode of calculator
mode of calculator