Question

Problem - 2.1: From two diametrically opposite points
A and B on earth, moon is observed. The angle 0
subtended at the moon by the two directions of
observation is 1°54'. If radius of earth is 0.638 x 10 m,
find the distance of the moon from the earth.​

Answer 1

Answer:

=1°54

′

=114

′

=(114×60)"=114×60×4.85×10

−6

rad=3.32×10

−2

rad

Basis,b=AB=1.276×10

7

m

So,the distance of the moon from the earth,

S=

ϕ

B

=

3.32×10

−2

1.276×10

7

=3.84×10

8