SOLUTION: what is the amplitude and the period of this graph: y=5cos 3 x I know the amplitude is 5, but what is the period?

Algebra.Com
Question 187838This question is from textbook saxon algebra 2
: what is the amplitude and the period of this graph: y=5cos 3 x
I know the amplitude is 5, but what is the period?
This question is from textbook saxon algebra 2

Found 2 solutions by stanbon, user_dude2008:
Answer by stanbon(75887)   (Show Source): You can put this solution on YOUR website!
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.

Answer by user_dude2008(1862)   (Show Source): You can put this solution on YOUR website!
General form: y=a*cos(bx+c)+d

y=5cos 3 x ---> a=5, b=3, c=0, d=0

amplitude: A=abs(a)=abs(5)=5

period: T=2pi/b=2pi/3

RELATED QUESTIONS

What is the amplitude and the period of this graph: y=-2sin x I know the amplitude is 2, (answered by user_dude2008)
what is the cycle amplitude and period of... (answered by tommyt3rd)
What are the amplitude and period of... (answered by erica65404)
What is the period and amplitude of y =... (answered by Alan3354)
what is the amplitude and period of the graph y=... (answered by Alan3354)
what is the amplitude and period for... (answered by lwsshak3)
Graph the periodic function. Determine the domain and range. Identify the period and... (answered by user_dude2008)
what is the amplitude, period, and phase shift of f(x)=... (answered by Edwin McCravy,MathLover1,ikleyn)
What is the Period and Amplitude of 3/4 pi cos (pi)(x)/12 ? Thank you (answered by Alan3354,robertb)