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JEE Main 2011Medium

Q.The principal value of cos⁡−1(cos⁡4π/3)\cos^{-1} (\cos 4\pi/3) is

a
4π/34\pi/3
b
2π/32\pi/3
c
π/3\pi/3
d
5π/35\pi/3

Correct Answer: Option B

The correct solution involves applying the fundamental concept to derive the final value step by step...

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