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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Can you express cos(7x) in terms of powers of cos(7x)
Start from:
cos(7x) = cos(7x) + i * sin(7x)
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