If sin x cosh y = cos theta, cos x sinh...

If sin x cosh ` y = cos theta,` cos x sinh `y = sin theta` then `sinh^2` y =

A

`cos h^(2)x`

B

`cos^(2)x`

C

`cos h^(2)x`

D

`sin h^(2)x`

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The correct Answer is:

B

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