Word.ws English Dictionary

Machin's formula

Machin's formula proper noun: a formula for calculating the digits of pi: π/4=4 arctan 1/5- arctan 1/(239).

Proper noun

Machin's formula

  1. A formula for calculating the digits of pi: π/4=4 arctan 1/5- arctan 1/(239)

Origin of Machin's formula

Devised by astronomer John Machin.

Questions about Machin's formula

What does Machin's formula mean?
Machin's formula means a formula for calculating the digits of pi: π/4=4 arctan 1/5- arctan 1/(239).
What part of speech is Machin's formula?
Machin's formula is a proper noun.

Words near Machin's formula in the dictionary

  1. machilids
  2. Machilipatnam
  3. machimoi
  4. machimos
  5. Machin
  6. Machin's formula
  7. Machin-like formula
  8. machinabilities
  9. machinability
  10. machinable
  11. machinal

Source and license

Adapted from Wiktionary: Machin's formula (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “Machin's formula.” Word.ws, https://word.ws/machin%27s_formula. Based on Wiktionary, CC BY-SA 4.0.