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Solve the problem.
-In 1838, the German mathematician and astronomer Friedrich Wilhelm Bessel was the first person to calculate
the distance to a star other than the Sun. He accomplished this by first determining the parallax of the star, 61
Cygni, at 0.314 arc seconds (Parallax is the change in position of the star measured against background stars as
Earth orbits the Sun. See illustration.) If the distance from Earth to the Sun is about 150,000,000 km and determine the distance d from Earth to 61 Cygni using Bessel's figures.
Letters of Condolence
Written expressions of sympathy towards someone who has experienced loss or suffering.
Coworkers
are individuals who work together in the same organization or on the same team, often sharing tasks or goals.
Sensitivity
The quality of being aware of and understanding the feelings and needs of others.
Clarity
The quality of being coherent and intelligible, ensuring ease of understanding.
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