Answer:
The period of the sinusoidal function is 4.
Step-by-step explanation:
In order to find the period, we can use below definition of period.
The time requires to complete a full cycle is called period. In other words, the length of a complete cycle is called period.
From the given figure, we can see that the sinusoidal function the length of a complete cycle is 4.
Therefore, the period of the sinusoidal function is 4.
