Question

The height, h, in feet of a piece of cloth tied to a waterwheel in relation to sea level as a function of time, t, in seconds can be modeled by the equation h = 8 cosine (StartFraction pi Over 10 EndFraction t). What is the period of the function?

Answer 1

the answer is in the picture below :)

Answer 2

20 seconds

Explanation:

The period is the value of t that makes the cosine argument change by 2π.

That value is ...

2π = π/10t

20 = t . . . . . . . multiply by 10/π

The period of the function is 20 seconds.