► My Trigonometry course: https://www.kristakingmath.com/trigonometry-course
Sketching polar curves takes a lot of practice, but once you get the hang of it, these problems can actually be pretty fun!
There are a few tricks to getting these right. The first thing you want to do is set the argument of the trig function equal to pi/2. Then you want to sketch the curve on cartesian axes, marking off the horizontal axis in the increments that resulted from the equation you set up earlier with the argument and the pi/2.
Once you've got the curve sketched on cartesian axes, it'll be a lot easier to translate it to polar axes. You'll use the values along the horizontal axis as angles on your polar axes, and the values along the vertical axis as distances on your polar axes.
In this particular video, we'll be graphing a cardioid, which is a polar curve that looks like a circle with a "dent" in one side.
● ● ● GET EXTRA HELP ● ● ●
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● ● ● CONNECT WITH KRISTA ● ● ●
Hi, I’m Krista! I make math courses to keep you from banging your head against the wall. ;)
Math class was always so frustrating for me. I’d go to a class, spend hours on homework, and three days later have an “Ah-ha!” moment about how the problems worked that could have slashed my homework time in half. I’d think, “WHY didn’t my teacher just tell me this in the first place?!”
So I started tutoring to keep other people out of the same aggravating, time-sucking cycle. Since then, I’ve recorded tons of videos and written out cheat-sheet style notes and formula sheets to help every math student—from basic middle school classes to advanced college calculus—figure out what’s going on, understand the important concepts, and pass their classes, once and for all. Interested in getting help? Learn more here: http://www.kristakingmath.com
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