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The moon is observed from two diametrically opposite points A and Bon Earth. The angle $ \theta$ subtended at the moon by the two directions of observation is $1^{\circ}54'$. Given the diameter of the Earth to be about $ 1.276 \times 10^7 m$. Compute the distance of the moon from the Earth.

$\begin {array} {1 1} (A)\;38.4 \times 10^8m & \quad (B)\;38.4 \times 10^4m \\ (C)\;3.84 \times 10^8m & \quad (D)\;3.84 \times 10^4m \end {array}$

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Ans : (C)
$3.84 \times 10^8m$
answered May 28, 2014 by thanvigandhi_1

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