An asteroid is going to hit the Earth.<br />To calculate its distance it is observed<br />from 2 diametrically opposite points<br />A, B on Earth. The angle subtended at<br />the asteroid by these two directions of<br />observations is 2°. Given the diameter<br />of Earth to be about 1.276 x 10' m.<br />compute the distance of the asteroid.
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Answer:
θ
=
2
o
=
π
180
×
2
=
0.034
rad
Distance AB =
1.276
×
10
7
m
D
=
A
B
θ
D
=
1.276
×
10
7
0.034
=
3.75
×
10
8
m
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