Answer:
Amplitude=7
Period=[tex]2\pi[/tex]
Phase shift=[tex]90^{\circ}=\frac{\pi}{2} rad[/tex]
Step-by-step explanation:
We are given that
[tex]y=7cos(\theta-90^{\circ})[/tex]
We have to find the amplitude , period and phase shift for given equation.
We know that a function
[tex]y=Acos(bx+c)+d[/tex]
Where A=Amplitude of function
Period=[tex]|\frac{2\pi}{b}|[/tex]
Phase shift=[tex]-\frac{c}{b}[/tex]
By comparing we get
Amplitude=7
Period=[tex]2\pi[/tex]
Phase shift=[tex]90^{\circ}=\frac{\pi}{2} rad[/tex]
