Simplify the Given Expression Algebraically $$\cos \left( \frac { \pi } { 2 } + x \right)$$

question 21

Multiple Choice

Simplify the given expression algebraically.
$$\cos \left( \frac { \pi } { 2 } + x \right)$$

• A) \(\sin x\)
• B) \(- \sin x\)
• C) \(\cos x\)
• D) \(- \cos x\)
• E) 1

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