Question

HELP PLEASE!
A sound wave is modeled with the equation y =1/4 cos 2pi/3 theta
a. Find the period. Explain your method.

Answer 1

I know the amplitude is 1/4 but I don't know how to find the period.

Answer 2

Would the period be 3?

Answer 3

if there is afunction
\[y=acosbx\]
then period of this function is
\[T=\frac{ 2\pi }{ b}\]
so here the function is
y =1/4 cos 2pi/3 theta
so period=\[\large\frac{ 2\pi }{ \frac{ 2\pi }{ 3}}=\large3\]

Answer 4

do u get it? @amypperson

Answer 5

Yes thank you soo much :)

Answer 6

^_^