What is the period of f(t)=cost f(t)=cost?

1 Answer
May 12, 2018

2pi2π or 360"°"360°

Explanation:

graph{y=cosx [-1,13, -4,3.4]}
Observe the length of a cycle from the graph of f(t)=costf(t)=cost.

OR

We know that the period of cosine function is (2pi)/c2πc, in y=acoscthetay=acoscθ.

  • In f(t)=costf(t)=cost, c=1c=1.

:. The period is (2pi)/1=2pi.