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Question: Plotting r = 1/cos(t) in polar coordinates

Question:Plotting r = 1/cos(t) in polar coordinates

Rouben Rostamian 7711 Maple
March 19 2015
1

In the (r,t) polar coordinates, the graph of the equation r = 1/cos(t) should be a straight vertical line segment but Maple produces junk.  What is going on?

plot(1/cos(t), t=0..Pi/3, coords=polar);

The parametric version

plot([1/cos(t), t, t=0..Pi/3], coords=polar);

produces the same thing.
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