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Find the Value of cot pi/24...

Find the Value of `cot pi/24`

A

` sqrt(2) + sqrt(3) + 2 - sqrt(6)`

B

` sqrt(2) + sqrt(3) + 2 + sqrt(6)`

C

` sqrt(2) - sqrt(3) - 2 + sqrt(6)`

D

` 3 sqrt(2) - sqrt(3) - sqrt(6)`

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