Find the phase shift of the function.
-$$y = 3 \cos \left( \frac { 1 } { 2 } x + \frac { \pi } { 2 } \right)$$
A) $\frac { \pi } { 2 }$ units to the left
B) $3 \pi$ units to the right
C) $\frac { \pi } { 4 }$ units to the right
D) $\pi$ units to the left

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The Answer of Find the phase shift of the function.
-$$y = 3 \cos \left( \frac { 1 } { 2 } x + \frac { \pi } { 2 } \right)$$
A) $\frac { \pi } { 2 }$ units to the left
B) $3 \pi$ units to the right
C) $\frac { \pi } { 4 }$ units to the right
D) $\pi$ units to the left

Find the Phase Shift of the Function y=3cos⁡(12x+π2)y = 3 \cos \left( \frac { 1 } { 2 } x + \frac { \pi } { 2 } \right)y=3cos(21​x+2π​)

Find the Phase Shift of the Function $y = 3 \cos \left( \frac { 1 } { 2 } x + \frac { \pi } { 2 } \right)$