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$\sin^{- 1} \frac{4}{5} + \cos^{- 1} \frac{2}{\sqrt{3}}$ এর মান কোনটি?

\tan^{- 1} \frac{2}{11}

\tan^{- 1} \frac{32}{11}

\tan^{- 1} \frac{11}{2}

- \tan^{- 1} \frac{2}{11}

ANS : 3

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