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​ cos^-1cos(4π/3) = ​

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in Trigonometry by (53.2k points)

cos-1cos(\(\frac{4\pi}{3}\)) =

(A) \(\frac{4\pi}{3}\)

(B) \(\frac{2\pi}{3}\)

(C) - \(\frac{\pi}{3}\)

(D) π

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Answer is (B)

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