Find the Specified Quantity $y = - 5 \cos \left( \frac { 1 } { 4 } x + \frac { \pi } { 3 } \right)$

question 98

Multiple Choice

Find the specified quantity.
-Find the period of $y = - 5 \cos \left( \frac { 1 } { 4 } x + \frac { \pi } { 3 } \right)$ .

• A) \(\frac { 2 \pi } { 3 }\)
• B) \(4 \pi\)
• C) \(8 \pi\)
• D) \(5 \pi\)