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JEE Main 2006Medium

Q.The value of cos⁡(tan⁡−1(1/3))\cos(\tan^{-1} (1/\sqrt{3})) is

a
3/2\sqrt{3}/2
b
1/21/2
c
2/2\sqrt{2}/2
d
1/31/\sqrt{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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