जर cosec2 θ + cot2 θ = \(5\over3\), तर cot 2θ चे मूल्य किती आहे?

1
\(1\over\sqrt3\)
2
- \(1\over\sqrt3\)
3
\(2\over\sqrt3\)
4
- \(2\over\sqrt3\)

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