Give the Amplitude or Period as Requested $y = \cos \frac { 1 } { 3 } x$

question 15

Multiple Choice

Give the amplitude or period as requested.
-Amplitude of $y = \cos \frac { 1 } { 3 } x$

• A) \(6 \pi\)
• B) \(\frac { 4 \pi } { 3 }\)
• C) \(\frac { \pi } { 4 }\)
• D) 4

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