The following equation involves a trigonometric equation in quadratic form. Solve the equation on the interval [0, 2x). 2 cos x+3 cos x = - 1 Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. x= (Type an exact answer, using t as needed. Use a comma to separate answers as needed. Use integers or fractions for any numbers in the expression.) B. There is no solution.

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