- #1

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## Homework Statement

Does anyone know what d(r-hat)/d(theta) in Cylindrical coordinates is?

## Homework Equations

## The Attempt at a Solution

I'm pretty sure its -(theta-hat) but I'm not sure, any help?

Thanks so much

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- Thread starter khfrekek1992
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- #1

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Does anyone know what d(r-hat)/d(theta) in Cylindrical coordinates is?

I'm pretty sure its -(theta-hat) but I'm not sure, any help?

Thanks so much

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- #3

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anyone? :)

- #4

Homework Helper

MHB

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[tex]{d\hat r \over d\theta} = \hat \theta[/tex]

If you draw [itex]\hat r[/itex] for 2 angles, you'll see that the vector-difference between them points in the direction of [itex]\hat \theta[/itex].

Its (approximate) length is [itex]d\theta[/itex].

- #5

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Oh! I see how you get that now.. Thanks so much! That helps a ton :D

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