Example 2.3 The moon is observed from
two diametrically opposite points A and B
on Earth. The angle e subtended at the
moon by the two directions of observation
is 1°54'. Given the diameter of the Earth to
be about 1.276 x 107 m, compute the
distance of the moon from the Earth
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4
Answer:
The parallax angle in radians is: θ=(1+
60
54
)×
180
π
=0.03316 rad
Hence, the distance between moon and earth:
=
θ
Diameter of Earth
=
0.03316
1.276×10
7
m
=3.84×10
8
m
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