Callculating orbital radius with parallax and arc seconds

[paulusmaulus]

Homework Statement

I'm attempting to find the orbital radius for a binary system based on the parallax of the system and angular separation:
1. A visual binary system that is 5 pc away is seen edge-on (i.e. we are in the plane of the orbit). The maximum angular separation of the two stars is 2 arc seconds.

Homework Equations

d=1/p

The Attempt at a Solution

 

[tiny-tim]

welcome to pf!

hi paulusmaulus! welcome to pf!

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