Decide Whether the Expression Is or Is Not an Identity $$\frac { 1 } { 1 - \cos x } + \frac { 1 } { 1 + \cos x } = \csc ^ { 2 } x$$

question 236

Multiple Choice

Decide whether the expression is or is not an identity.
- $$\frac { 1 } { 1 - \cos x } + \frac { 1 } { 1 + \cos x } = \csc ^ { 2 } x$$

• A) Not an Identity
• B) Identity

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