Arc Length (Set up the Integral)

[johnhuntsman]

x = t + cot t
y = t - sin t
0 ≤ t ≤ 2π

Somehow the answer is:

2π
∫sqrt(3 - 2*sin t - 2*cos t) dt
0

I'm afraid I don't know where to start on this one. I don't need someone to walk me through it (probably) but a point in the right direction would be appreciated.

 

[johnhuntsman]

Nevermind this post everyone. I made a foolish mistake. I'm supposed to do sqrt[(x')^2 + (y')^2] for anyone who makes the same mistake and comes across this in a Google search. It was in an earlie rpart of the chapter I'm working on even. Sorry everyone.