Write the Word or Phrase That Best Completes Each Statement $$\frac { 1 + \csc x } { \sec x } = \cos x + \cot x$$

Essay

Write the word or phrase that best completes each statement or answers the question.
Establish the identity.
- $$\frac { 1 + \csc x } { \sec x } = \cos x + \cot x$$