Simplify the expression algebraically.
$3 \sin \left( \frac { \pi } { 2 } - x \right)$
A) $\frac { 1 } { 3 } \cos x$
B) $3 \cos x$
C) $- \frac { 1 } { 3 } \cos x$
D) $- 3 \cos x$
E) $3 \sin x$

Question

Simplify the expression algebraically. 
 $3 \sin \left( \frac { \pi } { 2 } - x \right)$  
A) $\frac { 1 } { 3 } \cos x$
B) $3 \cos x$
C) $- \frac { 1 } { 3 } \cos x$
D) $- 3 \cos x$
E) $3 \sin x$

Quizplus · Accepted Answer

The expression $3 \sin \left( \frac { \pi } { 2 } - x \right)$ can be simplified using the trigonometric identity $\sin(\frac{\pi}{2} - x) = \cos(x)$, resulting in $3 \cos x$.

Simplify the Expression Algebraically 3sin⁡(π2−x)3 \sin \left( \frac { \pi } { 2 } - x \right)3sin(2π​−x)

Simplify the Expression Algebraically $3 \sin \left( \frac { \pi } { 2 } - x \right)$