`cos(x) + 1 = -cos(x)` Solve the equation.

Textbook Question

Chapter 5, 5.3 - Problem 13 - Precalculus (3rd Edition, Ron Larson).
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mathace | (Level 3) Assistant Educator

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Solve the equation `cos(x)+1=-cos(x)`




`x=(2pi)/3+2pin, x=(4pi)/3+2pin` 

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