Write the product as a sum: 18 cos(35u) cos(12u)

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section: Chapter Questions
Problem 19T
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Write the product as a sum:
18 cos(35u) cos(12u)
=
Transcribed Image Text:Write the product as a sum: 18 cos(35u) cos(12u) =
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