What is parallax method ?
Hi,
Swatisinghania has given absolutely correct answer. So, you can refer to it.
Here are few more things I like to add,
Parallax Method: A distant body in space is observed from two different places on earth. The two lines of observations from two points on earth subtend an angle at the distant body. Knowing the angle and the distance between the two points on earth we can find the distance of the object in space. This is the parallax method of measurement.
For details you may refer to the animations and derivations in the study material.
@ Swatisinghania. Good answer. You get a thumb up. Keep posting!!