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Letters ONLY. If you choose more than one letters, please arrange them in alphabetical order, please. A. cos 2A= cos A - sin A

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Letters ONLY. If you choose more than one letters, please arrange them in alphabetical order, please. A. cos 2A= cos A - sin A B. cos 2A = (cos Asin A) (cos A+ sin A) C. cos 2A=2 cos A - 1 A-1 D. cos 2A 1-2 sin A = E. cos 2A = cos A + sin A O A, B, C. D O B, C, D O A, C, E O C, D

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