# When looking at a cartesian graph

## Main Question or Discussion Point

should every whole number that curve x crosses be taken into consideration when
constructing a polar graph? For example, when y=1 is crossed, should the radius be drawn
on the polar graph if the x value is not an exact, uh, pi number (for example instead
of .77 which is pi/4 the x value that curve x crosses 1 is at .88 or something like that)
To see what I mean, graph 3cosx and look where y=2 is crossed (at x=.84). Should I ignore this point?

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