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If 0^@ltthetalt180^@ then sqrt(2+sqrt(2+...

If `0^@ltthetalt180^@` then `sqrt(2+sqrt(2+sqrt(2+...+sqrt(2(1+costheta))))`, then being ` n` number of 2's, is equal to

A

`2cos""theta/2^(n)`

B

`2cos""theta/2^(n-1)`

C

`2cos""theta/2^(n+1)`

D

None of these.

Text Solution

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The correct Answer is:
A
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