Verify That Each Equation Is an Identity $$\frac { 1 + \cos t } { 1 - \cos t } - \frac { 1 - \cos t } { 1 + \cos t } = 4 \cot t \csc t$$

Verify that each equation is an identity.
- $$\frac { 1 + \cos t } { 1 - \cos t } - \frac { 1 - \cos t } { 1 + \cos t } = 4 \cot t \csc t$$