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Identify the period, midline, and amplitude of each of the trigonometric functions below.

(a) $f(\theta) = 9\cos(8\pi \theta) -5$
Period:

Midline: $y$ =

Amplitude:

(b) $g(x) = -5\cos(3 x)+8$
Period:

Midline: $y$ =

Amplitude:

Hint

Identity and label the parts of a generalized sinusoidal function: $p(x)=A\cos(B(x-h))+k$

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