Express the Given Quantity in Terms of Sin X or Cos

question 187

Multiple Choice

Express the given quantity in terms of sin x or cos x.
- $$\sin \left( \frac { 7 \pi } { 2 } - x \right)$$

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

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