Solve 2 cos? 20- cos20-1 =0 if 0 <0 < 2n. Give all answers as exact values in radian.

Trigonometry (MindTap Course List)
8th Edition
ISBN:9781305652224
Author:Charles P. McKeague, Mark D. Turner
Publisher:Charles P. McKeague, Mark D. Turner
Chapter6: Equations
Section6.2: More On Trigonometric Equations
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2. Solve 2cos 20 - cos 20 –1= 0 if 0<0 < 2n. Give all answers as exact values in radian.
Transcribed Image Text:2. Solve 2cos 20 - cos 20 –1= 0 if 0<0 < 2n. Give all answers as exact values in radian.
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