Find the curvature at t p of the cycloid that is described by r(t) a(t sin t) i a(1 cos
Chapter 9, Problem 20(choose chapter or problem)
Find the curvature at \(t=\pi\) of the cycloid that is described by
\(\mathbf{r}(t)=a(t-\sin t) \mathbf{i}+a(1-\cos t) \mathbf{j}, \quad a>0\).
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