Making a Clock in Desmos!

Today, I make an analog clock in desmos!
Here is the project:

[individualst]

ive been trying for a few weeks to blindly get a line segment rotating at one endpoint, but i just couldn't figure it out (i knew it had to do with y=tan(a) but i didn't know what bounds i should insert)

then i figured, maybe i just look up how to make a clock! and there we have it (thanks!)

[suvanmadihally]

If you add variable and then do {t_seconds>60:t_seconds-60, t_seconds}, then you can add minutes with floor(80t/60)

[maryamnaeem]

Can you explain the math behind the function y = xtan(a) - why use 'tan' and how does that work to produce a straight line?

[Eduarodi]

Can you automatically set this clock to the actual time in your computer clock?

[zacharyandjulianbrownell]

I really want to make this but it’ll take too long is there a link

[johnnycranknose]

how can i limit the decimal place in the milliseconds to just tenths rather than hundredths