Parallax formula derivation problem?

[Rishavutkarsh]

parallax formula derivation problem!?

can anyone tell me in detail how to derive the parallax formula of deriving the distance of stars ? if animated videos or movies are included it would be better!!

 

[Dr_Morbius]

Did you bother googling it or looking it up on wikipedia?

http://en.wikipedia.org/wiki/Stellar_parallax