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1 + cos(12x) = _______. A. 2sin^2(6x) B. 2sin^2(12x) C. 2cos^2(12x) D. 2cos^2(6x)

1 + cos(12x) = _______. A. 2sin^2(6x) B. 2sin^2(12x) C. 2cos^2(12x) D. 2cos^2(6x)
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1 + cos(12x) = _______. A. 2sin^2(6x) B. 2sin^2(12x) C. 2cos^2(12x) D. 2cos^2(6x)

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User Jama
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The problem ask to calculate the equation 1+cos(12x) and the best answer among the choices you have given is letter D. 2cos^2(6x). I hope you are satisfied with my answer and feel free to ask for more if you have clarifications and questions.
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User Tobias Breuer
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