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If (-pi)/2<(theta)<(pi/2) and theta!=+-p...

If `(-pi)/2<(theta)<(pi/2)` and `theta!=+-pi/4`, then the value of `cot(pi/4+theta)cot(pi/4-theta)` is

A

`sqrt(p/q)`

B

`sqrt(q/p)`

C

`sqrt(pq)`

D

pq

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