How do you find the parsecs and light-years away a star is from the parallax angle? For example, Sirius has a 0.379s parallax angle. How would you get the parsecs and light-years away?
3-sd approximations: 2.64 parsec = 8.65 ly = 544000 AU..
For your long-term-memory:
the formula for distance = 1/
So, d=1/1.8374 AU=544000 AU.
In lu units, from AU units, d = 544000/62000 ly = 8.65 ly..
In parsec units, from AU units, d=544000/206265 parsec = 2.64 parsec.
All results are rounded to 3-sd.