Question

the moon is at a distance of 3.84 x 10 8m from the earth.if viewed from two diametrically opposite points on the earth,the angle subtended by the moon is 1degree54" then what is the diameter of the earth?

Answer 1

Answer:

distance of moon

from earth (R) =3.84 X 10^8 m

angle substande by the moon (θ) =1°34"

=3600" + 34" (as 1° = 3600")

=3634" X 4.84 X 10^-6

(as 1"=4.84X10^-4 rad)

=1.75 X 10^-2 rad

l = ?

now, we know that,

=> l = Rθ

=> l = (1.75 X 10^-2 ) X (3.84 X 10^8)

=> l = 6.72 X 10^6 m

hence, the distance of earth from moon is 6.72 X 10^6 m.

Explanation:

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Answer 2

Answer:

Answer is given in the attachment