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Periodicity Identities

Trig identities showing the periodic behavior of the six trig functions.

 Periodicity Identities, radians Periodicity Identities, degrees sin (x + 2π) = sin x csc (x + 2π) = csc x sin (x + 360°) = sin x csc (x + 360°) = csc x cos (x + 2π) = cos x sec (x + 2π) = sec x cos (x + 360°) = cos x sec (x + 360°) = sec x tan (x + π) = tan x cot (x + π) = cot x tan (x + 180°) = tan x cot (x + 180°) = cot x