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Mathematics, 26.06.2019 07:30 belmontes

Which of the following is a solution to 2cos2x − cos x − 1 = 0? a. 0° b. 150° c. 180° d. 210°

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Which of the following is a solution to 2cos2x − cos x − 1 = 0? a. 0° b. 150° c. 180° d. 210°...

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