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Q.The principal value of cos⁡−1(cos⁡(−2π/3))\cos^{-1} (\cos ( -2\pi/3 )) is

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

Correct Answer: Option A

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

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