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sigsays sigsays
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11 years ago
Did not understand this question at all. Am I suppose to solve the expression or is there a textbook answer?

Once the distance to a remote object is determined via triangulation, one can measure the angular diameter of the object and convert that to an actual diameter. For relatively small angular diameters of a few degrees or less, the corresponding linear diameter can be approximated using the following expression:
Diameter=Distance×(Angular Diameter)(57.3 degrees)
The figure below illustrates that the diameter of a remote object increases with its distance and its measured angular diameter.

Consider the Moon and Sun. Their angular diameters are both equal to about .5 degree. If the Sun is roughly 400 times more distant than the Moon, how much bigger is the Sun’s diameter than the Moon’s?

400 times smaller
400 times bigger
800 bigger
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padrepadre
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