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Mathematics 23 Online
OpenStudy (anonymous):

Find the length of one arch of the cycloid: \[x=r(\theta-\sin \theta)\]\[y=r(1-\cos \theta)\]

OpenStudy (turingtest):

oh there is a super easy trick to this...

OpenStudy (anonymous):

What?!

OpenStudy (turingtest):

hold on I'm looking for it...

OpenStudy (turingtest):

http://en.wikipedia.org/wiki/Cycloid#Arc_length

OpenStudy (turingtest):

actually that wasn't what I had in mind, but using the regular parametric arc length formula gets the job done

OpenStudy (turingtest):

oops, I gave away the answer, my bad :S

OpenStudy (anonymous):

r is a constant here.isn't it?

OpenStudy (anonymous):

It's been awhile since I've worked with polar equations. How do I find the limits of integration with them?

OpenStudy (turingtest):

don't cycloids always have a constant radius by definition?

OpenStudy (anonymous):

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