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\sin 2 θ

এর মান কোনটি ?

\frac{1 - \tan^{2} θ}{1 + \tan^{2} θ}

\frac{1 + \tan^{2} θ}{2 \tan^{2} θ}

\frac{2 \tan^{2} θ}{1 + \tan^{2} θ}

\frac{\tan θ}{1 + \tan^{2} θ}

ANS : 3

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