Question 187838
what is the amplitude and the period of this graph: y=5cos 3 x
----------------------------------------------------------------
General Form: y = a*cos(bx+c)
Amplitude = |a|
Period = (2(pi))/b
--------------------------
Your Problem:
amp = 5
period = (2pi)/3 = (2/3)pi or 120 degrees
=============================================
Cheers,
Stan H.