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Stacking Triangles for Fun and Profit

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Stacking Triangles for Fun and Profit

Stacking Triangles for Fun and Profit - OranLooney.com.
One thing you may have noticed about the trigonometric functions sine and cosine is that they seem to have no agreed upon definition. Or rather, different authors choose different definitions as the starting point, mainly based on convenience. This isn’t problematic, or even particularly unusual in mathematics - as long as we can derive any of the other forms from any starting point, it makes little theoretical difference which we start from as they’re all equivalent anyway.

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