MCQ
$\cos^{-1}\Big(\frac{1}{2}\Big)$
- A$-\frac{\pi}{3}$
- ✓$\frac{\pi}{3}$
- C$\frac{\pi}{2}$
- D$\frac{2\pi}{3}$
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Statement $1$ : $AB - BA$ is always an invertible matrix
Statement $2$ : $AB -BA$ is never an identity matrix