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Sum to Product Identities

Trig identities which show how to rewrite sums and differences of sines or cosines as products.

 

Sum to Product Identities

 

See also

Product to sum identities

 


  this page updated 27-aug-12
Mathwords: Terms and Formulas from Algebra I to Calculus
written, illustrated, and webmastered by Bruce Simmons
NCTM Web Bytes December 2004 Web Bytes March 2005 Web Bytes