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Say that the shaded in plane is the plane $z = 4$, and the polar grid we drew on it is our usual polar grid, with concentric circles that have positive integer radii starting at $1$ and consecutive rays through the origin that have an angle of $\pi/12$ between them:If the cylindrical coordinates of $P$ and $Q$ are
\begin{align*} \text{Cylindrical coordinates of $P$} &= (r_1, \theta_1, z_1),\\ \text{Cylindrical coordinates of $Q$} &= (r_2, \theta_2, z_2),\\ \end{align*}where $r_1$ and $r_2$ are positive and $\theta_1$ and $\theta_2$ are between $0$ and $2\pi$, enter
\[r_1, \theta_1, z_1, r_2, \theta_2, z_2\]in that order.

 Feb 16, 2021
 #1
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The answer is 2, pi/3, 4, 6, 2*pi/3, 4.

 Feb 16, 2021
 #2
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no it's wrong

 Feb 25, 2021

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