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Mathematics, 19.05.2021 18:40 xrivas

Find all solutions for x €(0,21 ) for: 2cos²x-3cosx-2=0. a. x= 2pi/3 b. x=pi/3, 5pi/3 c. x=5pi/6, 7pi/6 d. x=2pi/3, 4pi/3

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Find all solutions for x €(0,21 ) for: 2cos²x-3cosx-2=0. a. x= 2pi/3 b. x=pi/3, 5pi/3 c. x=5pi/6, 7...

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