Which one is correct from the following [RPET 2001] - Vidyadip

MCQ

Which one is correct from the following [RPET 2001]

✓
$\sin (ix)=i\,\sinh \,x$
B
$\cos (ix)=i\,\cosh \,x$
C
$\sin (ix)=-i\,\sinh \,x$
D
$\tan (ix)=-i\,\tanh \,x$

✓

Answer

Correct option: A.

$\sin (ix)=i\,\sinh \,x$

A

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