Q4:B/Simplify [cos 20-i sin2018[cos 30+ i sin301² [cos 40+ i sin40]³[cos 20-i sin2015 using De Moivre's theorem?
Q4:B/Simplify [cos 20-i sin2018[cos 30+ i sin301² [cos 40+ i sin40]³[cos 20-i sin2015 using De Moivre's theorem?
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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![Q4:B/Simplify
[cos 20-i sin20cos 30+ i sin30 1²
[cos 40+ i sin40]³[cos 20-i sin2015 using De Moivre's theorem?](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Faf48db14-2089-42f2-ba7d-ff54d4496068%2F07f529aa-60f3-405a-aa32-2c13c019118e%2F4exbdb_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Q4:B/Simplify
[cos 20-i sin20cos 30+ i sin30 1²
[cos 40+ i sin40]³[cos 20-i sin2015 using De Moivre's theorem?
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