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If (3pi)/4 < alpha < pi , then sqrt(cose...

If `(3pi)/4 < alpha < pi` , then `sqrt(cosec ^2alpha+2cotalpha)` is equal to

A

`1+ cot alpha`

B

`1- cot alpha`

C

`-1 cot alpha`

D

`-1 + cot alpha`

Text Solution

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The correct Answer is:
C
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