Finding the Magnetic Field in a System with Intersecting Current-Carrying Pieces

[cdummie]

B is tangent to the circle.

I know it is, i just drew it wrong, but anyway, what's the deal with angle, i still don't understand how it is sine and not cosine?

 

[SammyS]

I know it is, i just drew it wrong, but anyway, what's the deal with angle, i still don't understand how it is sine and not cosine?

OK!

Yes, of course, you're correct!

 

[cdummie]

OK.OK!

Yes, of course, you're correct!

Thanks again for help on this one!

 

[SammyS]

Thanks again for help on this one!

Don't forget to double each result.