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# Proof of Trigonometric functions

Just have a look at the picture. You now don't need any $$\pi$$ there!!! I think that trigonometry came this way...

Note by Fahad Shihab
3 years, 5 months ago

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gud · 3 years, 5 months ago

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thanks... I thought of deriving a precise value of $$\pi$$ to any number of digits, and not by using infinite series, so, with this success, i got to prove these trigonometric functions and calculate the value of many angles. · 3 years, 5 months ago

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These triangles already exist. They are called special triangles. If you want to calculate pi then just divide circumference with diameter. It's as easy as that. · 1 year, 9 months ago

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Yeah, you are right... Now part of textbooks... But in order to calculate pi, circumference must be known. No measurement can be precise to even 15 digits. So, these are a good method to find out those. · 1 year, 8 months ago

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