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# Questions tagged [trigonometry]

For challenges where trigonometry plays an important role.

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### Inverse trigonometric functions

There are 3 (commonly used) trigonometric functions sin cos and tan each of these functions ...
• 6,035
2k views

### Cutting a Circular Pizza Vertically

Most people would cut circular pizzas into circular sectors to divide them up evenly, but it's also possible to divide them evenly by cutting them vertically like so, where each piece has the same ...
• 4,040
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### 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|...
• 3,845
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### Compute the Three Dimensional Discrete Cosine Transform

Challenge I've checked that there is a question Compute the Discrete Cosine Transform which is a competition for implementing a shortest solution to compute the one dimensional discrete cosine ...
• 403
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