MCQ
$\sin ^{-1}\left(-\frac{1}{2}\right)+2 \cos ^{-1}\left(\frac{-\sqrt{3}}{2}\right)=?$
- A$\frac{\pi}{2}$
- B$\pi$
- ✓$\frac{3 \pi}{2}$
- D$2 \pi$
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