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5. If 90° < θ < 180° and sin θ = 7, find cos 20. = 0 - O Ο Ο 8 49 41 49 49

5. If 90° < θ < 180° and sin θ = 7, find cos 20. = 0 - O Ο Ο 8 49 41 49 49

Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter7: Analytic Trigonometry
Section: Chapter Questions
Problem 19T
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5. If 90° < 0 < 180° and sin 0 = 2, find cos 20. 8 O-99 O 8 49 41 O 49 O-1 41 49
Transcribed Image Text:5. If 90° < 0 < 180° and sin 0 = 2, find cos 20. 8 O-99 O 8 49 41 O 49 O-1 41 49
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