Question

describe parralex methods?

Answer 1

here is your answer....

Parallax and Distance Measurement. Astronomers use an effect called parallax to measure distances to nearby stars. Parallax is the apparent displacement of an object because of a change in the observer's point of view. ... The distance d is measured in parsecs and the parallax angle p is measured in arcseconds.

I hope it help you....

mark me as brainlist please.

Answer 2

measuring the angleФ subtented by the astronomical object at two location on the earth seperated by a large distance b, (called basis) the distance s of the object can be determined
s=basis /Ф