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Today at 9:07 AM
Mathematics

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Answer :

Аноним Аноним

Today at 9:12 AM

Answer:

x=pi/8 and 7pi/8

Step-by-step explanation:

2cos(2x)=sqrt(2), cos(2x)=1/sqrt(2). 2x=pi/4 and 7pi/4, x=pi/8 and 7pi/8

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