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\tan 3 A

এর মান কোনটি?

\frac{3 \tan A - 4 \tan^{3} A}{1 - 3 \tan^{2} A}

\frac{3 \tan A - \tan^{3} A}{1 - 3 \tan^{2} A}

\frac{3 \tan A + 4 \tan^{3} A}{1 - 3 \tan^{2} A}

\frac{3 \tan A - 4 \tan^{3} A}{1 - 3 \tan^{2} A}

ANS : 2

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