Prove that : ^ -1 (-1 2 )+ ^ -1 (- 3 2 )= ^ -1 (-1 2 ) - Vidyadip

Question

Prove that : $\sin ^{-1}\left(-\frac{1}{2}\right)+\cos ^{-1}\left(-\frac{\sqrt{3}}{2}\right)=\cos ^{-1}\left(-\frac{1}{2}\right)$

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