Calculator Flowers Set 1 You calculator should already have the correct mode and zoom settings for Polarity. If your calculator does not have the correct settings refer to my instructions on how to set the Mode and Zoom settings for Polarity. Go to Y= and type in r1: 9cos(θ2.5) type in r2: 9(-cos(θ2.5)) It should look like this: Click ENTER watch as your graph slowly appears Your graph should look like this: