Simplify the given expression algebraically.
$$\cos \left( \frac { \pi } { 2 } + x \right)$$
A) $\sin x$
B) $- \sin x$
C) $\cos x$
D) $- \cos x$

Name: Simplify the given expression algebraically. \[\cos \left( \frac { \pi } { 2 } + x \right)\] A) $\sin x$ B) $- \sin x$ C) $\cos x$ D) $- \cos x$
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Question

Quizplus · Accepted Answer

Using the trigonometric identity $\cos(\frac{\pi}{2} + x) = -\sin(x)$, we can simplify the given expression to $-\sin(x)$.

Simplify the Given Expression Algebraically cos⁡(π2+x)\cos \left( \frac { \pi } { 2 } + x \right)cos(2π​+x)

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