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The principal value of $S i n^{- 1} (S i n (\frac{2 π}{3}))$ is

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2π3

π3

−π3

−2π3

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detailed solution

Correct option is B

Sin-1Sin2π3=Sin−1Sinπ−π3 =Sin−1Sinπ3 =π3

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The principal value of Sin−1Sin2π3 is

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The principal value of $S i n^{- 1} (S i n (\frac{2 π}{3}))$ is