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General solution of `cos2x=sqrt(2)(cosx-sinx)` is

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in Trigonometry by (123k points)
General solution of `cos2x=sqrt(2)(cosx-sinx)` is
A. `npi+(pi)/(2), 2npi+(pi)/(4), ninZ`
B. `npi+(pi)/(4), 2npi+(pi)/(4), ninZ`
C. `npi+(pi)/(4), 2npi+(pi)/(2), ninZ`
D. `npi+(pi)/(2), 2npi+(pi)/(2), ninZ`
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Correct Answer - B
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