Answer each of the following questions in one word or one sentence or as per exact requirement of the question:

Write the value of .

Given cos^{-1} (cos 14π/3)

= cos^{-1} [cos (4π + 2π/3)]

= cos^{-1} (cos 2π/3)

= 2π/3

∴ cos^{-1} (cos 14π/3) = 2π/3

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