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2 December, 17:02

Which of the following describes the domain of y = tan x, where n is any integer? A. x≠2nπ B. x≠π/2+nπ C. x≠nπ D. x≠nπ/2

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  1. 2 December, 20:07
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    Y=tanx=sinx/cosx we cant divide by 0 so

    cosx=0 would be a problm

    cosx=0 when x=pi/2,3pi/2, ... (2n+1) pi/2

    (2n+1) pi/2 = (2npi+pi) / 2=2npi/2+pi/2=npi+pi/2

    so its B
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