The value of ${\sin ^{ - 1}}\left( {{{12} \over {13}}} \right) - {\sin ^{ - 1}}\left( {{3 \over 5}} \right)$ is equal to :
$\pi - {\sin ^{ - 1}}\left( {{{63} \over {65}}} \right)$
${\pi \over 2} - {\sin ^{ - 1}}\left( {{{56} \over {65}}} \right)$
${\pi \over 2} - {\cos ^{ - 1}}\left( {{9 \over {65}}} \right)$
$\pi - {\cos ^{ - 1}}\left( {{{33} \over {65}}} \right)$
