# Math Help - Is the r in polar coordinates a vector?

1. ## Is the r in polar coordinates a vector?

When we introduced the idea that the r in (r,theta) can be negative, it made me wonder if the r is a vector. Is it?

2. ## Re: Is the r in polar coordinates a vector?

Originally Posted by lamp23
When we introduced the idea that the r in (r,theta) can be negative, it made me wonder if the r is a vector. Is it?
No, it isn't... r is a real variable and a vector is a set of n real variables, with n>1...

Kind regards

$\chi$ $\sigma$