Simplify the Expression $\frac { \sin ^ { 2 } x - 1 } { \cos ( - x ) }$

question 239

Multiple Choice

Simplify the expression.
- $\frac { \sin ^ { 2 } x - 1 } { \cos ( - x ) }$

• A) \(\cos x\)
• B) \(- \cos x\)
• C) \(- \sin x\)
• D) \(\sin x\)

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