Viète’s formula – a fun calculator investigation (and an interesting discovery!)

Here’s an interesting calculator activity: See how the answer gets closer to pi as you add an extra term to the product each time.  I have just tried this on my scientific calculator and it will only allow me to go as far as the fifth term, so it would make a perfect quick investigative activity for any lesson.

Viète’s formula

Tagged “vieta” | Curiosa Mathematica.

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