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Using principal value, write the value of $ \cos^{-1} \bigg( \large\frac{1}{2} \bigg)$$ + 2\sin^{-1} \bigg(\large \frac{1}{2} \bigg) $

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Ans:
\[\frac{\pi}{3}+\frac{\pi}{3}=\frac{2\pi}{3}\]
answered Feb 14, 2013 by rvidyagovindarajan_1
 
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