MCQ
$\cos ^{-1}\left(\cos \frac{2 \pi}{3}\right)+\sin ^{-1}\left(\sin \frac{2 \pi}{3}\right)=?$
- A$\frac{4 \pi}{3}$
- B$\frac{\pi}{2}$
- C$\frac{3 \pi}{4}$
- ✓$\pi$
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