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Solve sin x = cos x for integer n and give the general solution.
Ax = nπ + π/4
Bx = nπ - π/4
Cx = 2nπ + π/4
Dx = 2nπ ± π/4
Answer & Solution
Correct answer: A. x = nπ + π/4
Dividing by cos x gives tan x = 1, whose solutions are π/4 plus multiples of π.
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