Estimate the distance to this star, Mathematics

To find the distance to nearby stars, the method of parallax is used. The idea is to find a triangle with the star at one vertex and with a base as large as possible. To do this, the star is observed at two different times exactly 6 months apart, and its apparent change in position is recorded. From these two observations ∠E1SE2, can be calculated. (The times are chosen so that ∠E1SE2 is as large as possible, which guarantees that ∠E1SO is 90°.) Alpha Centauri, the star nearest the earth, the measured angle ∠E1SE2  has been found to be 0.000422°. Estimate the distance to this star. (Use 9.3 x 107miles as the distance from the earth to the sun)

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Posted Date: 5/8/2013 4:19:46 AM | Location : United States

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