The principle value of $cos^{-1}\left(-\frac{1}{2}\right)$ is :
Answer & explanation
Correct answer: option 1
$\cos^{-1}\left(-\frac{1}{2}\right)=π-\left(\cos^{-1}\left(-\frac{1}{2}\right)\right)$
$=π-\frac{π}{3}$
$=\frac{2π}{3}$
The principle value of $cos^{-1}\left(-\frac{1}{2}\right)$ is :
Correct answer: option 1
$\cos^{-1}\left(-\frac{1}{2}\right)=π-\left(\cos^{-1}\left(-\frac{1}{2}\right)\right)$
$=π-\frac{π}{3}$
$=\frac{2π}{3}$