Determine If the Following Is an Identity $$\cot ^ { 2 } x = ( \csc x - 1 ) ( \csc x + 1 )$$

Multiple Choice

Determine if the following is an identity.
- $$\cot ^ { 2 } x = ( \csc x - 1 ) ( \csc x + 1 )$$

A) Identity
B) Not an identity