6 (cos 120° + i sin 120°) z 4(cos 30° + i sin 30°) is O 10 cis 150° O 24 cis 90° 24 cis 150°
6 (cos 120° + i sin 120°) z 4(cos 30° + i sin 30°) is O 10 cis 150° O 24 cis 90° 24 cis 150°
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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Transcribed Image Text:Question 1
6 (cos 120° + i sin 120°) a 4 (cos 30° + i sin 30°) is equal to
O 10 cis 150°
O 24 cis 90°
O 24 cis 150°
O 2 cis 150°
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