Double Angle Formulas/Also known as

Double Angle Formulas: Also known as

Some sources hyphenate: Double-Angle Formulas.

Some sources use the form Double-Angle Formulae.


Sources

  • 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): double-angle formulae
  • 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): double-angle formulae
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