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If z = sin theta -i cos theta then for a...

If `z = sin theta -i cos theta` then for any integer n,

A

`Z^(n)+(1)/(Z^(n))=2 cos((n pi)/(2)-n theta)`

B

`Z^(n)+(1)/(Z^(n))=2 sin((n pi)/(2)-n theta)`

C

`Z^(n)-(1)/(Z^(n))=2i sin (n theta-(n pi)/(2))`

D

`Z^(n)-(1)/(Z^(n))=2i cos((n pi)/(2)-n theta)`

Text Solution

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