s 4
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section: Chapter Questions
Problem 18T
Related questions
Question
a
cos 4x
b
sin 2x
c
cos 2x
d
sin 4x
![Which expression does (cos 3x)(cos x) - (sin 3x)(sin x) simplify to?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F942f345f-6803-4706-bb09-098ffe37745d%2F7040657a-120f-4fef-a76f-0b1a622a2503%2F9rz1jbq_processed.png&w=3840&q=75)
Transcribed Image Text:Which expression does (cos 3x)(cos x) - (sin 3x)(sin x) simplify to?
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