If $\cos( \theta ) = - \frac {5} {10}$ and $\theta$ is in quadrant II , then find

(a) $\tan( \theta ) \cot( \theta ) =$

(b) $\csc( \theta ) \tan( \theta ) =$

(c) $\sin ^2 ( \theta ) + \cos ^2 ( \theta ) =$