Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.5: Product-to-sum And Sum-to-product Formulas
Problem 25E
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Question
![Q4:B/Simplify
[cos 20-i sin20 ]8 [cos 30+ i sin30 1²
[cos 40+ i sin40 1³ [cos 20-i sin20 ]5
using De Moivre's theorem?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F625c0c12-9923-4466-b820-4ddd54d81814%2F490d0992-90dd-48fb-85fa-64b655220d80%2Fjcqcn5_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Q4:B/Simplify
[cos 20-i sin20 ]8 [cos 30+ i sin30 1²
[cos 40+ i sin40 1³ [cos 20-i sin20 ]5
using De Moivre's theorem?
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