7. Prove: cos(0 + 2) 7) = sine.

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.4: Multiple-angle Formulas
Problem 28E
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7. Prove: cos(0 +
ETN
=— sinə.
Transcribed Image Text:7. Prove: cos(0 + ETN =— sinə.
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