Question
$\cos^{-1}\Big(\frac{1}{2}\Big)$
  1. $-\frac{\pi}{3}$
  2. $\frac{\pi}{3}$
  3. $\frac{\pi}{2}$
  4. $\frac{2\pi}{3}$

Answer

  1. $\frac{\pi}{3}$

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