Find the Specified Quantity $y = - 5 \cos \left( 2 x + \frac { \pi } { 4 } \right)$

question 364

Multiple Choice

Find the specified quantity.
-Find the amplitude of $y = - 5 \cos \left( 2 x + \frac { \pi } { 4 } \right)$

• A) \(\frac { \pi } { 2 }\)
• B) 5
• C) \(- 10\)
• D) 2