Simplify. 4 cos a - 4 COS 2π +α 4 • COS 2π +α 2

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.2: Trigonometric Equations
Problem 55E
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Question
Simplify.
4 cos
a
-
4
COS
2π +α
4
•
COS
2π +α
2
Transcribed Image Text:Simplify. 4 cos a - 4 COS 2π +α 4 • COS 2π +α 2
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