code: public static float cot(double angle) {
          int idx = GenericMath.floor(angle * SIN_CONVERSION_FACTOR);
          return cosRaw(idx) / sinRaw(idx);
      }
docs: Cotangent calculations using a table.<br> <i>cos(angle) / sin(angle)</i><br><br> <p/> <b>No interpolation is performed:</b> Accuracy is up to the 6th decimal place
  
  @param angle in radians
  @return the cotangent of the angle