Express the given sum or difference as a product of sines and/or cosines. cos x+ cos 3x cos x+ cos 3x = (Simplify your answer.)
Express the given sum or difference as a product of sines and/or cosines. cos x+ cos 3x cos x+ cos 3x = (Simplify your answer.)
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.4: Multiple-angle Formulas
Problem 16E
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![Express the given sum or difference as a product of sines and/or cosines.
cos x+ cos 3x
cos x+ cos 3x =
(Simplify your answer.)](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F78fd8214-9ab1-41c7-bd85-ff88f8061f39%2F24765914-0093-41ad-9e68-6507a179759d%2Ftx1n4hs_processed.png&w=3840&q=75)
Transcribed Image Text:Express the given sum or difference as a product of sines and/or cosines.
cos x+ cos 3x
cos x+ cos 3x =
(Simplify your answer.)
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