5. sin 20 1-cos 20 = cote

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section7.3: The Addition And Subtraction Formulas
Problem 54E
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Verify that the equation is an identity

5.
sin 20
1-cos 20
= cot 8
Transcribed Image Text:5. sin 20 1-cos 20 = cot 8
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