this is the question that I got: Use the class keyword to create a Thermostat class. The constructor accepts a Fahrenheit temperature. In the class, create a getter to obtain the temperature in Celsius and a setter to set the temperature in Celsius. Remember that C = 5/9 * (F - 32) and F = C * 9.0 / 5 + 32, where F is the value of temperature in Fahrenheit, and C is the value of the same temperature in Celsius.

the code below is the answer, can you explain why do I need that set to convert Celsius to Fahrenheit? cause I only have to output Celsius, not Fahrenheit

class Thermostat {
  constructor(fahrenheit) {
    this.fahrenheit = fahrenheit;
  }
  
  get temperature() {
    return (5 / 9) * (this.fahrenheit - 32);
  }
  
  set temperature(celsius) {
    this.fahrenheit = (celsius * 9.0) / 5 + 32;
  }
}
const thermos = new Thermostat(76); // Setting in Fahrenheit scale
let temp = thermos.temperature; // 24.44 in Celsius
thermos.temperature = 26;
temp = thermos.temperature; // 26 in Celsius