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

question 48

Multiple Choice

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