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What is the derivative of $f( \theta ) =6\tan { \theta } -\sec { \theta } $?

$\cfrac { dy }{ d\theta } =6\sec ^{ 2 }{ \theta \tan ^{ 2 }{ \theta } } $

$\cfrac { dy }{ d\theta } =6\tan { \theta } \cot { \theta } $

$\cfrac { dy }{ d\theta } =6\sec ^{ 2 }{ \theta -\sec { \theta } \tan { \theta } } $

$\cfrac { dy }{ d\theta } =6\cot { \theta } +\tan ^{ 2 }{ \theta } $