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15 votes
9 answers
1k views

Ptolemy's table of chords

Ptolemy's Almagest contains a table of chords that effectively served as the world's only comprehensive trigonometric table for over a millennium. In modern form it looks like this: \begin{array}{|l|...
Parcly Taxel's user avatar
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6 votes
12 answers
1k views

Print cos(2π/17) exactly

One way to construct a regular heptadecagon starts with drawing a horizontal line of length 1 from the center to a vertex. Then the distance along that line from ...
anatolyg's user avatar
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10 votes
3 answers
2k views

Help me with trigonometry!

Thank you guys so much for your help with calculus. Now I need some help with my upcoming trigonometry test. On the test, I'll need to simplify expressions. I’ll be given input like ...
Ypnypn's user avatar
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