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31-10-2021
Mathematics

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2cos(2x/3 - pi/4) - căn 3 = 0

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31-10-2021

2cos(2x/3+pi/4)-square2=0

cos(2x/3+pi/4)=radical2/2

cos(2x/3+Pi/4)=cos pi/4

2x/3+pi/4=pi/4+k2pi or 2x/3+pi/4 =-pi/4+

k2pi X=K3pi or x=-3pi/4 + k3pi

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