Full solution: In Exercises 2330, find the principal unit normal vector to the curve at
Chapter 12, Problem 26(choose chapter or problem)
In Exercises 23–30, find the principal unit normal vector to the curve at the specified value of the parameter.
\(\mathbf{r}(t)=\pi \cos t \mathbf{i} \quad \pi \sin t \mathbf{j}\), \(t=\frac{\pi}{6}\)
Text Transcription:
r(t)= pi cos t i + pi sin t j
t= pi/6
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