A par sec is a convenient unit of length on the astronomical scale. It is the distance o an object that will show a parallax of 1 s of arc from opposite ends of a base line equal to the distance from the earth to the sun. How much is a sec in terms of metre?

Explanation

To solve the problem of converting a par sec (parsec) into meters, we will follow these steps:

### Step-by-Step Solution:

1. **Understanding the Definition of Parsec**:
- A parsec is defined as the distance at which an object shows a parallax of 1 arcsecond when viewed from two points separated by a distance equal to 1 astronomical unit (AU), which is the average distance from the Earth to the Sun.

2. **Identifying the Values**:
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