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If cosh 2 x= 99, then tanh x =...

If cosh `2 x= 99`, then tanh x =

A

`(5)/(7 sqrt(2))`

B

`(7)/(5 sqrt(2))`

C

`(5 sqrt(7))/(2)`

D

`(7 sqrt(5))/(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
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