Find the phase shift of the function.
-$$y = \cos \left( x - \frac { \pi } { 2 } \right)$$
A) $\frac { \pi } { 2 }$ units down
B) $\frac { \pi } { 2 }$ units to the right
C) $\frac { \pi } { 2 }$ units up
D) $\frac { \pi } { 2 }$ units to the left

Question

Quizplus · Accepted Answer

The phase shift of a trigonometric function of the form $y = \cos(x - C)$ is $C$ units to the right if $C > 0$. Here, $C = \frac{\pi}{2}$, so the phase shift is $\frac{\pi}{2}$ units to the right.

Find the Phase Shift of the Function y=cos⁡(x−π2)y = \cos \left( x - \frac { \pi } { 2 } \right)y=cos(x−2π​)

Find the Phase Shift of the Function $y = \cos \left( x - \frac { \pi } { 2 } \right)$