Express as a product. 2 1-2 cos a

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.5: Product-to-sum And Sum-to-product Formulas
Problem 12E
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Express as a product.
2
1-2 cos a
Transcribed Image Text:Express as a product. 2 1-2 cos a
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