Find the Amplitude of the Function $$y = 5 \cos \frac { 1 } { 4 } x$$

question 88

Multiple Choice

Find the amplitude of the function.
- $$y = 5 \cos \frac { 1 } { 4 } x$$

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

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