Question

The parallax of heavenly body measured from 2points diametrically opposite on earth's equator is 1min of arc. Find the distance of heavenly body from the centre of the earth in AU. GIVEN:Radius of earth=6400km,1 AU =2.19*10 raised to 11 (please show the full method)

Answer 1

Answer:

Here, θ=2.0'=2∘60=260×π180radian

I = diameter of earth = 2×6400km

=1.28×104km=1.28×107m.

r = ?

From I=rθ,

r=Iθ=1.28×107π/30×180=2.2×1010m

Explanation: