Write the word or phrase that best completes each statement or answers the question.
Establish the identity.
-$$\cot ^ { 2 } x = ( \csc x - 1 ) ( \csc x + 1 )$$

Name: Write the word or phrase that best completes each statement or answers the question. Establish the identity. -\[\cot ^ { 2 } x = ( \csc x - 1 ) ( \csc x + 1 )\]
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The Answer of Write the word or phrase that best completes each statement or answers the question.
Establish the identity.
-$$\cot ^ { 2 } x = ( \csc x - 1 ) ( \csc x + 1 )$$

Write the Word or Phrase That Best Completes Each Statement cot⁡2x=(csc⁡x−1)(csc⁡x+1)\cot ^ { 2 } x = ( \csc x - 1 ) ( \csc x + 1 )cot2x=(cscx−1)(cscx+1)

Write the Word or Phrase That Best Completes Each Statement $\cot ^ { 2 } x = ( \csc x - 1 ) ( \csc x + 1 )$