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How do you solve ##sin 3x = 0##?
sin 3x = 0 ##a. sin 3x = 0 = sin 0 -> x = 0## ##b. sin 3x = 0 = sin pi -> 3x = pi -> x = pi/3## ##c. sin 3x = 0 = sin 2pi -> 3x = 2pi-> x = (2pi)/3##