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What is the period of the cosine function y cos x?
The period of a cosine function is the length of the shortest interval on the x -axis over which the graph repeats. Period = 2 π | b |
Example: Sketch the graphs of y = cos ( x ) and y = 2 cos ( x ) .
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Answer:

Period of y= cosx is 360°

Step-by-step explanation:

Refer the figure given below.

The period is the time required to complete one revolution.

We have graph for y = cosx.

We can see the function is repeating after a change x axis value of 2π.

That is the period of y = cosx is 2π.

Here 2π is in radians corresponding degree value is 360°

So period of y= cosx is 360°

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