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For A=133^(circ), 2 cos (A/2)=...

For `A=133^(circ), 2 cos (A/2)=`

A

`sqrt(1+sin A)+sqrt(1-sin A)`

B

`sqrt(1+sin A)-sqrt(1-sin A)`

C

`-sqrt(1+sin A)+sqrt(1-sin A)`

D

`-sqrt(1+sin A)-sqrt(1-sin A)`

Text Solution

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