3 Prove the identity: sin30 = sin® –sin30 using De Moivre's theorem.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.2: Trigonometric Equations
Problem 106E
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Prove the identity: sin30 = -sine – sin30 using De Moivre's theorem.
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Transcribed Image Text:3 1 Prove the identity: sin30 = -sine – sin30 using De Moivre's theorem. 4 4
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