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If tanh^(2)(x)=tan^(2)theta then cosh(2x...

If `tanh^(2)(x)=tan^(2)theta` then `cosh(2x)=`

A

`cos2theta`

B

`sectheta`

C

`sin2theta`

D

`cos theta`

Text Solution

Verified by Experts

The correct Answer is:
B
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AAKASH SERIES-HYPERBOLIC FUNCTIONS -EXERCISE - II
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  2. Cosh(2x) + sinh(2x) =

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  4. If cosh(x)=sec theta, then tanh^(2)((x)/(2))=

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