# Polar Coordinates: Arc Length: Example 1: Cardioid

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In this video I go over a quick example on using the arc length formula derived in my earlier video for polar curves, and this time find the length of the cardioid r = 1 + sinϴ. This is the same cardioid that I graphed in my earlier video titled Polar Coordinates: Example 7: Cardioid. Solving for the arc length is pretty standard for the cardioid (Greek for “heart”), as we just plug in the variables into the arc length formula. The resulting integral involves integrating the trigonometric function (2+2sinϴ)1/2 which is tedious to solve and thus I just used an online integral calculator to solve it. I may solve the integral by hand in a later video so stay tuned! The result of the calculator is that the cardioid has a length of 8, which is a very simple and neat result. This is a useful and quick video to show you how to use the arc length formula so make sure to watch the video!

View video notes on the Hive blockchain: https://peakd.com/mathematics/@mes/video-notes-polar-coordinates-arc-length-example-1-cardioid

Related Videos:

Polar Coordinates: Arc Length Formula: https://youtu.be/lrh15Brq9B4
Polar Coordinates: Area Formula: Area Between Two Polar Curves: https://youtu.be/bAbz1T-_Twc
Polar Coordinates: Area Formula: https://youtu.be/wd-EwiKzqa0
Polar Coordinates: Graphing With Polar Curves with Desmos Calculator: https://youtu.be/xY9Be9HHRsk
Polar Coordinates: Cartesian Connection: https://youtu.be/HcaTYrpmGaU
Parametric Equations and Polar Coordinates: https://youtu.be/usSors49Gdw
Trigonometry Identities: Proof that sin2(x) + cos2(x) = 1: http://youtu.be/o-fAx_96lgw
Polar Coordinates: Example 7: Cardioid: https://youtu.be/rPErcaqNUIY .

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