Inverse Trigono...

$$\frac{\cos ^{-1}(41 / 49)}{\sin ^{-1}(2 / 7)}=$$

The value of $$tan(\frac { 1 }{ 2 } { cos }^{ -1 }(\frac { \sqrt { 5 }  }{ 3 } ))$$ is

If tan (x + y) = 33 and x = $${ tan }^{ -1 }3$$, then y will be

$$\tan { ^{ -1 }\left( 3/5 \right)  } +\tan { ^{ -1 }\left( 1/4 \right)  } =$$

If $$sin^{-1}(\dfrac{1}{3}) + sin^{-1}(\dfrac{2}{3}) = sin^{-1} x$$, then x is equal to

The value of $$\sin ^{-1}(\sin 5\frac {\pi}{3})=$$

The value of $$\displaystyle sec\left [ sin^{-1}\left (sin \dfrac{50\pi }{9} \right ) + cos^{-1}cos\left ( \dfrac{31\pi }{9} \right ) \right ]$$ is equal to

$${ \cos   }^{ -1 }\left[ \cos  \left( 2{ \cot   }^{ -1 }\left( \sqrt { 2 } -1 \right)  \right)  \right]$$ is equal to

The value of $$\sin^{-1}(\cos (\log_{2}(4\alpha -44)))$$ is

The number of solutions of the equation $$3\cos^{-1}x-\pi x-\dfrac {\pi}{2}=0$$