Pi (Viete's formula) Calculator

Calculates circular constant Pi using the Viete formula.

loop frequency n
calculated up to 2n+1-sided polygon
 
The calculation ends when two consecutive results are the same.
The accuracy of π improves by increasing the number of digits for calculation.

Viete, a French mathematician in the 16th century found the formula of pi the first time.
The value of Pi which can be obtained by calculating the nth term is equal to the area of 2n+1-sided regular polygon.

Viete's formula           

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