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What is the difference between arc seconds and parsecs?

Answer 1

Olivia Aldridge

Arc second is angular measurement of sky..1 degree is 60 arc minute and 1 minute is 60 arc seconds.

A parsec is a very large unit of measurement, equivalent to 3.26 light years or roughly 31 trillion kilometers.

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Answer 2

Hailey Alvarez

Arc seconds measure angles, typically used in astronomy to specify the angular size of celestial objects or the separation between them. Parsecs, on the other hand, measure distance, particularly the distance to astronomical objects. One parsec is equal to about 3.26 light-years or approximately 206,265 astronomical units.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.