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1. (a) Show that sin(3x)=3sin x−4 sin³ x . (b) Hence, if sin A=- 5 13 و determine the exact value of sin 3 A

1. (a) Show that sin(3x)=3sin x−4 sin³ x . (b) Hence, if sin A=- 5 13 و determine the exact value of sin 3 A

Advanced Engineering Mathematics
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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1. (a) Show that sin(3x)=3sin x−4 sin³ x . (b) Hence, if sin A=- 5 13 و determine the exact value of sin 3 A
Transcribed Image Text:1. (a) Show that sin(3x)=3sin x−4 sin³ x . (b) Hence, if sin A=- 5 13 و determine the exact value of sin 3 A
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