Question Text
Question 3 :
The value of $\cos^{-1} (\cos 12) - \sin^{-1} (\sin 12)$ is 
Question 4 :
The value of $\sin^{-1} \left( \dfrac{2 \sqrt 2}{3} \right ) + \sin^{-1} \left( \dfrac{1}{3}\right )$ is equal to
Question 5 :
${\tan ^{ - 1}}2 + {\tan ^{ - 1}}3$ is equal to
Question 8 :
If $x,y,z \in [-1,1]$ such that $\cos^{-1}x +\cos^{-1}y +\cos^{-1}z=0$, find $x+y+z$.
Question 9 :
If $\sin^{-1}\dfrac{1}{3} + \sin^{-1}\dfrac{2}{3} = \sin^{-1}x$, then $x$ is equal to-
Question 10 :
$\cos ^{-1}\left ( \cos \left ( \frac{5\pi}{4} \right ) \right )$ is given by
