Happy Pi Day!

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3.1415,infographic,IRL,march 14th,math,pi,Pi Day,pie,Pie Chart
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[youtube=http://www.youtube.com/watch?v=jG7vhMMXagQ&w=500&h=412]

I Have Neither

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math,Pie Chart,practical applications,trigonometry
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But I still don't need trigonometry. Take that, math!