Use your graphing calculator to find the solutions to the following equation for  0° ≤ ? < 360°  by defining the left side and right side of the equation as functions and then finding the intersection points of their graphs. Make sure your calculator is set to degree mode. (Enter your answers as a comma-separated list. If there is no solution, enter NO SOLUTION.) 2 cos2 ? − 5 cos ? = −2

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