Find all exact solutions on the interval [0, 2x). Look for opportunities to use trigonometric identities. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) cos(2x) + cos(x) = 0

Algebra & Trigonometry with Analytic Geometry
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ISBN:9781133382119
Author:Swokowski
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Chapter7: Analytic Trigonometry
Section: Chapter Questions
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Find all exact solutions on the interval [0, 2x). Look for opportunities to use trigonometric identities. (Enter your answers as a comma-separated list. If an answer does not exist, enter
DNE.)
cos(2x) + cos(x) = 0
X =
Transcribed Image Text:Find all exact solutions on the interval [0, 2x). Look for opportunities to use trigonometric identities. (Enter your answers as a comma-separated list. If an answer does not exist, enter DNE.) cos(2x) + cos(x) = 0 X =
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