Determine the Amplitude or Period as Requested $y = 3 \cos \left( 5 x - \frac { \pi } { 2 } \right)$

question 289

Multiple Choice

Determine the amplitude or period as requested.
Graph Variations of y = cos x
-Period of $y = 3 \cos \left( 5 x - \frac { \pi } { 2 } \right)$

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

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