Question

i need the explanation of parsec, angstrom, astronomical unit, ​

Answer 1

ANSWER.

The parsec (symbol: pc) is a unit of length used to measure the large distances to astronomical objects outside the Solar System. A parsec is obtained by the use of parallax and trigonometry, and is defined as the distance at which one astronomical unit subtends an angle of one arcsecond, i.e. 1/3600th of a degree.

Explanation:

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Answer 2

Answer:

light years

Explanation: