# 051 - SingAlong: "Walkin' Around Unit Circles"

Math-Tans present....

"Walkin' Around Unit Circles"

(*aka "Rockin' Around the Christmas Tree")

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Original by Johnny Marks; sung by Brenda Lee (age 13 in 1958).

Lee Official Lyrics: https://www.youtube.com/watch?v=1qYz7rfgLWE

Karaoke Version: https://www.youtube.com/watch?v=1IvFsW3O4gI

Bieber 2020 Version: https://www.youtube.com/watch?v=RGVEGOMPCEw

*

Walkin' around, unit circles,

Doing trigonometry.

Radius one means points (x,y),

Use (cos, sine), we'll all agree.

Talkin' about, unit circles,

Special angles we should bring.

Degrees depart, when there's two pi,

And we fraction everything.

Sine will give half and root half, for sixths and, fourths of pi,

Third of pi means root three quarters.

Cos? We can, reverse pi orders.

Spinning around, unit circles,

Finding slope for all the tans.

Taking care if there's negatives,

As we finalize trig plans.

(Sax solo)

Sine will give half and root half, for sixths and, fourths of pi,

Third of pi means root three quarters.

Cos? We can, reverse pi orders.

Spinning around, unit circles,

Finding slope for all the tans.

Taking care if there's negatives,

As we fin-al-ize trig plans!

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Previous XMas Specials:

2020: "Solving for Unknowns" ; 2019: "Three Things of Math" ; 2018: "Sequenced" ; 2017: "Triangles Rock" ; 2016: "Do We Have a Square Here?" ; 2015: "Like a Bell" ; 2014: "Polar Plot"; 2013: "O Factor Tree" ; 2012: "A Squared Song" ; 2011: "Decimal"

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