\({\sqrt\frac{1 + cos\ 2A}{1 - cos\ 2A}}\)ର ମୂଲ୍ୟ = ? (ଟିପନ୍ତୁ: A ଶୂନ୍ୟ ନୁହେଁ )

1
cos A
2
cot A
3
tan A
4
sin A

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