sin0 + sin20 + sin30 + ...... +sin40 = ?
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 2E
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Transcribed Image Text:sine + sin20 + sin30 + ...... +sin40 = ?
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