Sorry if my audio quality is bad, I need to get better at speaking too; tried my best.

Here's my sources:

Gibbens, Sarah. “Ancient Tablet May Show Earliest Use of This Advanced Math.” National Geographic, 25 Aug. 2017,

Joyce, David E. Sines, 1996,

“Solving an Ancient Tablet's Mathematical Mystery | National Geographic.” Youtube, uploaded by National Geographic, 3 September 2017,

Swetz, Frank J., and Victor J. Katz. “Mathematical Treasures - Zhoubi Suanjing.” Mathematical Treasures - Zhoubi Suanjing | Mathematical Association of America, Jan. 2011,

“Trigonometry: What Is It?” Youtube, uploaded by New Planet School, 1 January 2013,

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