For the Simple Harmonic Motion Described by the Trigonometric Function $d = 9 \cos \frac { 8 \pi } { 5 } t$

question 120

Multiple Choice

For the simple harmonic motion described by the trigonometric function, find the frequency per second.
$d = 9 \cos \frac { 8 \pi } { 5 } t$

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

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