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If cosh 2x = 199 , then cothx =...

If cosh `2x = 199` , then cothx =

A

`5/(3sqrt(11))`

B

`5/(6sqrt(11))`

C

`7/(3sqrt(11))`

D

`10/(3sqrt(11))`

Text Solution

Verified by Experts

The correct Answer is:
d
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