Simplify the Trigonometric Expression by Following the Indicated Direction $$\text { Multiply } \frac { \sin \theta } { 1 - \cos \theta } \text { by } \frac { 1 + \cos \theta } { 1 + \cos \theta }$$

Essay

Simplify the trigonometric expression by following the indicated direction.
- $$\text { Multiply } \frac { \sin \theta } { 1 - \cos \theta } \text { by } \frac { 1 + \cos \theta } { 1 + \cos \theta }$$