Describe each of the following properties of the graph of the Cosine Function, f(theta) = cos(theta) and relate the property to the unit circle definition of cosine.

Amplitude
Period
Domain
Range
x-intercepts

I am beyond confused.

Question

Describe each of the following properties of the graph of the Cosine Function, f(theta) = cos(theta) and relate the property to the unit circle definition of cosine.

    Amplitude
    Period
    Domain
    Range
    x-intercepts


I am beyond confused.

anonymous · Answer

Amplitude = radius of circle, r.
 period = time rate at which function moves from 0 to 2π
Domain: {0, 2π}
Range: {-r, +r}
 x-intercepts at theta = π/2 and theta = 3π/2

anonymous · Answer

I still don't understand how you got that >.<

anonymous · Answer

I googled it

anonymous · Answer

@cwrw238 help please>.<