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

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

Correct Answer: Option A

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

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