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cot^(1) sqrt(cos alpha) -tan^(-1) sqr...

`cot^(1) sqrt(cos alpha) -tan^(-1) sqrt(cos alpha)= x` then sin x

A

`tan^(2) (alpha)/(2)`

B

`cot^(2) (alpha)/(2)`

C

`tan alpha`

D

`cot (alpha)/(2)`

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The correct Answer is:
D
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