Fine all solutions:  3cos(pi/5x)=2

College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter1: Equations And Inequalities
Section1.3: Complex Numbers
Problem 19E: Find the values of x and y. x+x+yi=3+8i
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Fine all solutions:  3cos(pi/5x)=2

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