If theta in ((-pi)/(4), (pi)/(4)) and x=...

If `theta in ((-pi)/(4), (pi)/(4)) and x=log_(e )[cot((pi)/(4)+theta)]`
then prove that
`(i) cosh x= sec 2theta" " (ii) sinh x=-tan 2theta`

Text Solution

Verified by Experts

The correct Answer is:

`sec 2theta`

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VIKRAM PUBLICATION ( ANDHRA PUBLICATION)-HYPERBOLIC FUNCTIONS -EXERCISE - 9(a)

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