How do you use the amplitude and period to graph $f (x) = 4 cos (x - \frac{π}{2})$ $f(x) = 4 cos(x - pi/2 )$ ?

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Answer 1 · 2016-08-09T16:52:24

It is explained below.

Amplitude of this cosine function is 4, period is $2 π$ $2pi$ and horizontal shift is $\frac{π}{2}$ $pi/2$
Its graph can be drawn as shown below

enter image source here

How do you use the amplitude and period to graph f(x) = 4 cos(x - pi/2 )f(x)=4cos(x−π2)f(x) = 4 cos(x - pi/2 )?