Consider the function $$y = 9 \cos \left( 8 x - \frac { \pi } { 3 } \right)$$ . Specify the amplitude.
A) $$18$$
B) $$3$$
C) $$\frac { 9 } { 8 }$$
D) $$9$$
E) $$\frac { 8 } { 9 }$$

Name: Consider the function \[y = 9 \cos \left( 8 x - \frac { \pi } { 3 } \right)\] . Specify the amplitude. A) \[18\] B) \[3\] C) \[\frac { 9 } { 8 }\] D) \[9\] E) \[\frac { 8 } { 9 }\]
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Question

Quizplus · Accepted Answer

The amplitude of a cosine function in the form $y = A \cos(Bx - C)$ is given by the absolute value of $A$, which in this case is $9$.

Consider the Function y=9cos⁡(8x−π3)y = 9 \cos \left( 8 x - \frac { \pi } { 3 } \right)y=9cos(8x−3π​)

Consider the Function $y = 9 \cos \left( 8 x - \frac { \pi } { 3 } \right)$