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Please use the attached image (10 points) Find all solutions in the interval [2x, 4x ) for the equation cos x+ + cos x- =-1.

Please use the attached image

(10 points) Find all solutions in the interval [2x, 4x ) for the equation cos x+ + cos x- =-1. In order to get credit, you must show the steps to simplify this 2 2 using the trig formulas we learned in this unit

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