Polar Coordinates: Example 10: Graphing r = sin(8ϴ/5)

In this video I further into Polar Coordinates and this time look at Example 10 which involves graphing the function r = sin(8ϴ/5) using the amazing Desmos graphing calculator. Similar to my last video on graphing polar curves, I show how we can use the Desmos calculator to graph polar curves directly or by converting them to Parametric curves. Also in this video I show to determine the domain of the angle ϴ in which the polar curve repeats itself. I do this both visually using the graphing calculator, as well as analytically by using the periodic rotations of a typical sine wave. Note that this is just a quick and simple illustration of determining the domain for the simple case that the function does in fact have an exact whole number of rotations before it starts repeating itself. The curve graphed in this video is an amazing circular spiral flower shape and shows just how amazing the types of curves that can be plotted in polar coordinates (or as parametric equations)! Try it out yourself and let me know of any crazy shapes you can create!!

You can use my graph as a starting point: https://www.desmos.com/calculator/raiwkuult1

Download the notes in my video: https://1drv.ms/b/s!As32ynv0LoaIhvRDgaCbbcSUjWAFlA

View video notes on the Hive blockchain: @mes/video-notes-polar-coordinates-example-11-limacons-cochlea-archimedean-screw

Related Videos:

Polar Coordinates: Graphing With Polar Curves with Desmos Calculator:
Polar Coordinates: Example 9: Cardioid: Part 4:
Polar Coordinates: Example 9: Cardioid: Part 3: Question B:
Polar Coordinates: Example 9: Cardioid: Part 2: Question A:
Polar Coordinates: Example 9: Cardioid: Part 1: Slope Formula & Trigonometric Algebra:
Polar Coordinates: Tangents to Polar Curves:
Polar Coordinates: Symmetry:
Polar Coordinates: Example 8: Four-Leaved Rose:
Polar Coordinates: Example 7: Cardioid:
Polar Coordinates: Example 6: Part 2: Polar Circle to Cartesian:
Polar Coordinates: Example 5: Straight Lines:
Polar Coordinates: Example 4: Circle:
Polar Coordinates: Example 3: Cartesian to Polar:
Polar Coordinates: Example 2: Polar to Cartesian:
Polar Coordinates: Cartesian Connection:
Polar Coordinates: Example 1:
Polar Coordinates:
Parametric Equations and Polar Coordinates: .

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