Solve:-cos−1(21)−2sin−1(−21)

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Solve:- { ^{ - 1}}( {{1}{2}} ) - 2{ ^{ - 1}}( { - {1}{2}} )

Question

Solve:-
$cos^{- 1} (\frac{1}{2}) - 2 sin^{- 1} (- \frac{1}{2})$

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Samuel Discussed

Solve:-

cos^{- 1} (\frac{1}{2}) - 2 sin^{- 1} (- \frac{1}{2})

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5 mins ago

cos^{- 1} \frac{1}{2} - 2 sin^{- 1} \frac{- 1}{2}

= \frac{π}{3} - 2 \times (\frac{- π}{6})

= \frac{2 π}{3}

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