# Calculating a potential.

1. Jul 29, 2007

### Bert

why do the use sin^2()? en who can you go from 3 to 5.
http://img413.imageshack.us/img413/3919/verband1bismy6.jpg [Broken]
http://img254.imageshack.us/img254/6993/verband2sk4.jpg [Broken]

Thanks.

Last edited by a moderator: May 3, 2017
2. Jul 29, 2007

### Kurdt

Staff Emeritus
Looks to me like a simple error in the book. Should be $sin(\theta)$ rather than sin squared.

3. Jul 30, 2007

### Bert

I thinks also but I'm not certain.

Thanks.