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Solve cos 4x, if sin x - cos x = 1/3.
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Solve cos 4x, if sin x - cos x = 1/3.

User Joe Bowbeer
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3 votes
I’m not an expert in math but it looks correct
User Karan Owalekar
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5 votes

I'm not an expert at this but use the khan academy video on unit circle to help you tackle that problem.

User Mfrackowiak
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